PHILIPS LPC1766

LPC1768/66/65/64
32-bit ARM Cortex-M3 microcontroller; up to 512 kB flash and
64 kB SRAM with Ethernet, USB 2.0 Host/Device/OTG, CAN
Rev. 02 — 11 February 2009
Objective data sheet
1. General description
The LPC1768/66/65/64 are ARM Cortex-M3 based microcontrollers for embedded
applications featuring a high level of integration and low power consumption. The ARM
Cortex-M3 is a next generation core that offers system enhancements such as enhanced
debug features and a higher level of support block integration.
The LPC1768/66/65/64 operate at CPU frequencies of up to 100 MHz. The ARM
Cortex-M3 CPU incorporates a 3-stage pipeline and uses a Harvard architecture with
separate local instruction and data buses as well as a third bus for peripherals. The ARM
Cortex-M3 CPU also includes an internal prefetch unit that supports speculative
branching.
The peripheral complement of the LPC1768/66/65/64 includes up to 512 kB of flash
memory, up to 64 kB of data memory, Ethernet MAC, USB Device/Host/OTG interface,
8-channel general purpose DMA controller, 4 UARTs, 2 CAN channels, 2 SSP controllers,
SPI interface, 3 I2C-bus interfaces, 2-input plus 2-output I2S-bus interface, 8-channel
12-bit ADC, 10-bit DAC, motor control PWM, Quadrature Encoder interface, 4 general
purpose timers, 6-output general purpose PWM, ultra-low power Real-Time Clock (RTC)
with separate battery supply, and up to 70 general purpose I/O pins.
The LPC1768/66/65/64 are pin-compatible to the 100-pin LPC236x ARM7-based
microcontroller series.
2. Features
n ARM Cortex-M3 processor, running at frequencies of up to 100 MHz. A Memory
Protection Unit (MPU) supporting eight regions is included.
n ARM Cortex-M3 built-in Nested Vectored Interrupt Controller (NVIC).
n Up to 512 kB on-chip flash programming memory. Enhanced flash memory accelerator
enables high-speed 100 MHz operation with zero wait states.
n In-System Programming (ISP) and In-Application Programming (IAP) via on-chip
bootloader software.
n On-chip SRAM includes:
u 32/16 kB of SRAM on the CPU with local code/data bus for high-performance CPU
access.
u Two/one 16 kB SRAM blocks with separate access paths for higher throughput.
These SRAM blocks may be used for Ethernet (LPC1768/66/64 only), USB, and
DMA memory, as well as for general purpose CPU instruction and data storage.
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
n Eight channel General Purpose DMA controller (GPDMA) on the AHB multilayer
matrix that can be used with the SSP, I2S-bus, UART, the Analog-to-Digital and
Digital-to-Analog converter peripherals, timer match signals, and for
memory-to-memory transfers.
n Multilayer AHB matrix interconnect provides a separate bus for each AHB master. AHB
masters include the CPU, General Purpose DMA controller, Ethernet MAC
(LPC1768/66/64 only), and the USB interface. This interconnect provides
communication with no arbitration delays.
n Split APB bus allows high throughput with few stalls between the CPU and DMA.
n Serial interfaces:
u Ethernet MAC with RMII interface and dedicated DMA controller (LPC1768/66/64
only).
u USB 2.0 full-speed device/Host/OTG controller with dedicated DMA controller and
on-chip PHY for device, Host, and OTG functions. The LPC1764 includes a device
controller only.
u Four UARTs with fractional baud rate generation, internal FIFO, DMA support, and
RS-485 support. One UART has modem control I/O, and one UART has IrDA
support.
u CAN 2.0B controller with two channels.
u SPI controller with synchronous, serial, full duplex communication and
programmable data length.
u Two SSP controllers with FIFO and multi-protocol capabilities. The SSP interfaces
can be used with the GPDMA controller.
u Two I2C-bus interfaces supporting fast mode with a data rate of 400 kbits/s with
multiple address recognition and monitor mode.
u One I2C-bus interface supporting full I2C-bus specification and fast mode plus with
a data rate of 1 Mbit/s with multiple address recognition and monitor mode.
u On the LPC1768/66/65 only, I2S (Inter-IC Sound) interface for digital audio input or
output, with fractional rate control. The I2S-bus interface can be used with the
GPDMA. The I2S-bus interface supports 3-wire and 4-wire data transmit and
receive as well as master clock input/output.
n Other peripherals:
u 70 General Purpose I/O (GPIO) pins with configurable pull-up/down resistors and a
new, configurable open-drain operating mode.
u 12-bit Analog-to-Digital Converter (ADC) with input multiplexing among eight pins,
conversion rates up to 1 MHz, and multiple result registers. The 12-bit ADC can be
used with the GPDMA controller.
u 10-bit Digital-to-Analog Converter (DAC) with dedicated conversion timer and DMA
support (LPC1768/66/65 only).
u Four general purpose timers/counters, with a total of eight capture inputs and ten
compare outputs. Each timer block has an external count input and DMA support.
u One motor control PWM with support for three-phase motor control.
u Quadrature encoder interface that can monitor one external quadrature encoder.
u One standard PWM/timer block with external count input.
u RTC with a separate power domain and dedicated RTC oscillator. The RTC block
includes 64 bytes of battery-powered backup registers.
u Watchdog Timer (WDT) resets the microcontroller within a reasonable amount of
time if it enters an erroneous state.
LPC1768_66_65_64_2
Objective data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 11 February 2009
2 of 72
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
u System tick timer, including an external clock input option.
u Repetitive interrupt timer provides programmable and repeating timed interrupts.
u Each peripheral has its own clock divider for further power savings.
Standard JTAG test/debug interface for compatibility with existing tools. Serial Wire
Debug and Serial Wire Trace Port options.
Emulation trace module enables non-intrusive, high-speed real-time tracing of
instruction execution.
Integrated PMU (Power Management Unit) automatically adjusts internal regulators to
minimize power consumption during Sleep, Deep sleep, Power-down, and Deep
power-down modes.
Four reduced power modes: Sleep, Deep-sleep, Power-down, and Deep power-down.
Single 3.3 V power supply (2.4 V to 3.6 V).
Four external interrupt inputs configurable as edge/level sensitive. All pins on PORT0
and PORT2 can be used as edge sensitive interrupt sources.
Non-maskable Interrupt (NMI) input.
Clock output function that can reflect the main oscillator clock, IRC clock, RTC clock,
CPU clock, and the USB clock.
The Wakeup Interrupt Controller (WIC) allows the CPU to automatically wake up from
any priority interrupt that can occur while the clocks are stopped in deep sleep,
Power-down, and Deep power-down modes.
Processor wake-up from Power-down mode via interrupts from various peripherals.
Brownout detect with separate threshold for interrupt and forced reset.
Power-On Reset (POR).
Crystal oscillator with an operating range of 1 MHz to 25 MHz.
4 MHz internal RC oscillator trimmed to 1 % accuracy that can optionally be used as a
system clock.
PLL allows CPU operation up to the maximum CPU rate without the need for a
high-frequency crystal. May be run from the main oscillator, the internal RC oscillator,
or the RTC oscillator.
USB PLL for added flexibility.
Code Read Protection (CRP) with different security levels.
Available as 100-pin LQFP package (14 × 14 × 1.4 mm).
3. Applications
n
n
n
n
n
n
eMetering
Lighting
Industrial networking
Alarm systems
White goods
Motor control
LPC1768_66_65_64_2
Objective data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 11 February 2009
3 of 72
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
4. Ordering information
Table 1.
Ordering information
Type number
Package
Name
Description
Version
LPC1768FBD100
LQFP100
plastic low profile quad flat package; 100 leads; body 14 × 14 × 1.4 mm
SOT407-1
LPC1766FBD100
LQFP100
plastic low profile quad flat package; 100 leads; body 14 × 14 × 1.4 mm
SOT407-1
LPC1765FBD100
LQFP100
plastic low profile quad flat package; 100 leads; body 14 × 14 × 1.4 mm
SOT407-1
LPC1764FBD100
LQFP100
plastic low profile quad flat package; 100 leads; body 14 × 14 × 1.4 mm
SOT407-1
4.1 Ordering options
Table 2.
Ordering options
Type number
Flash
Total
SRAM
Ethernet
USB
CAN
I2S
DAC
Package
Sampling
LPC1768FBD100
512 kB
64 kB
yes
Device/
Host/OTG
2
yes
yes
100 pins
Q2 2009
LPC1766FBD100
256 kB
64 kB
yes
Device/
Host/OTG
2
yes
yes
100 pins
Q1 2009
LPC1765FBD100
256 kB
64 kB
no
Device/
Host/OTG
2
yes
yes
100 pins
Q1 2009
LPC1764FBD100
128 kB
32 kB
yes
Device
only
2
no
no
100 pins
Q1 2009
LPC1768_66_65_64_2
Objective data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 11 February 2009
4 of 72
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
5. Block diagram
JTAG
interface
EMULATION
TRACE MODULE
debug
port
RMII pins
LPC1768/66/65/64
TEST/DEBUG
INTERFACE
I-code
bus
MPU
ARM
CORTEX-M3
D-code
bus
DMA
CONTROLLER
system
bus
USB PHY
CLOCK
GENERATION,
POWER CONTROL,
SYSTEM
FUNCTIONS
USB HOST/
DEVICE/OTG
CONTROLLER
WITH DMA(3)
ETHERNET
CONTROLLER
WITH DMA(2)
master
XTAL1
XTAL2
RESET
USB pins
master
CLKOUT
clocks and
controls
master
slave
ROM
slave
MULTILAYER AHB MATRIX
SRAM 32/64 kB
P0 to
P4
slave
HIGH-SPEED
GPIO
APB slave group 0
SCK1
SSEL1
MISO1
MOSI1
RXD0/TXD0
8 × UART1
slave
FLASH
ACCELERATOR
FLASH
512/256/128 kB
APB slave group 1
SCK0
SSEL0
MISO0
MOSI0
SSP0
RXD2/3
TXD2/3
UART2/3
I2S(1)
3 × I2SRX
3 × I2STX
TX_MCLK
RX_MCLK
SPI0
I2C2
SCL2
SDA2
TIMER 0/1
RI TIMER
WDT
TIMER2/3
PWM1
EXTERNAL INTERRUPTS
12-bit ADC
SYSTEM CONTROL
PIN CONNECT
MOTOR CONTROL PWM
CAN1/2
I2C0/1
2 × CAP0/1
PWM1[7:0]
PCAP1[1:0]
AD0[7:0]
RTCX2
AHB TO
APB
BRIDGE 1
UART0/1
SCK/SSEL
MOSI/MISO
2 × MAT0/1
RTCX1
AHB TO
APB
BRIDGE 0
slave
SSP1
RD1/2
TD1/2
SCL0/1
SDA0/1
P0, P2
slave
4 × MAT2
2 × MAT3
2 × CAP2
2 × CAP3
EINT[3:0]
MC0A/B
MC1A/B
MC2A/B
MCFB1/2
MCABORT
GPIO INTERRUPT CONTROL
DAC(1)
32 kHz
OSCILLATOR
VBAT
AOUT
RTC
PHA, PHB
INDEX
QUADRATURE ENCODER
BACKUP REGISTERS
(1)LPC1768/66/65 only
(2)LPC1768/66/64 only
(3)LPC1764 USB device only
RTC POWER DOMAIN
002aad944
Grey-shaded blocks represent peripherals with connection to the GPDMA.
Fig 1.
Block diagram
LPC1768_66_65_64_2
Objective data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 11 February 2009
5 of 72
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
6. Pinning information
76
100
6.1 Pinning
1
75
LPC176xFBD100
Fig 2.
50
51
26
25
002aad945
Pin configuration LQFP100 package
6.2 Pin description
Table 3.
Pin description
Symbol
Pin
P0[0] to P0[31]
P0[0]/RD1/TXD3/
SDA1
P0[1]/TD1/RXD3/
SCL1
46[1]
47[1]
P0[2]/TXD0/AD0[7] 98[2]
P0[3]/RXD0/AD0[6] 99[2]
P0[4]/
I2SRX_CLK/
RD2/CAP2[0]
81[1]
Type
Description
I/O
Port 0: Port 0 is a 32-bit I/O port with individual direction controls for each bit. The
operation of port 0 pins depends upon the pin function selected via the pin connect
block. Pins 12, 13, 14, and 31 of this port are not available.
I/O
P0[0] — General purpose digital input/output pin.
I
RD1 — CAN1 receiver input.
O
TXD3 — Transmitter output for UART3.
I/O
SDA1 — I2C1 data input/output (this is not an I2C-bus compliant open-drain pin).
I/O
P0[1] — General purpose digital input/output pin.
O
TD1 — CAN1 transmitter output.
I
RXD3 — Receiver input for UART3.
I/O
SCL1 — I2C1 clock input/output (this is not an I2C-bus compliant open-drain pin).
I/O
P0[2] — General purpose digital input/output pin.
O
TXD0 — Transmitter output for UART0.
I
AD0[7] — A/D converter 0, input 7.
I/O
P0[3] — General purpose digital input/output pin.
I
RXD0 — Receiver input for UART0.
I
AD0[6] — A/D converter 0, input 6.
I/O
P0[4] — General purpose digital input/output pin.
I/O
I2SRX_CLK — Receive Clock. It is driven by the master and received by the
slave. Corresponds to the signal SCK in the I2S-bus specification.
(LPC1768/66/65 only).
I
RD2 — CAN2 receiver input.
I
CAP2[0] — Capture input for Timer 2, channel 0.
LPC1768_66_65_64_2
Objective data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 11 February 2009
6 of 72
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
Table 3.
Pin description …continued
Symbol
Pin
Type
Description
P0[5]/
I2SRX_WS/
TD2/CAP2[1]
80[1]
I/O
P0[5] — General purpose digital input/output pin.
I/O
I2SRX_WS — Receive Word Select. It is driven by the master and received by the
slave. Corresponds to the signal WS in the I2S-bus specification. (LPC1768/66/65
only).
O
TD2 — CAN2 transmitter output.
I
CAP2[1] — Capture input for Timer 2, channel 1.
I/O
P0[6] — General purpose digital input/output pin.
I/O
I2SRX_SDA — Receive data. It is driven by the transmitter and read by the
receiver. Corresponds to the signal SD in the I2S-bus specification.
(LPC1768/66/65 only).
I/O
SSEL1 — Slave Select for SSP1.
O
MAT2[0] — Match output for Timer 2, channel 0.
I/O
P0[7] — General purpose digital input/output pin.
I/O
I2STX_CLK — Transmit Clock. It is driven by the master and received by the
slave. Corresponds to the signal SCK in the I2S-bus specification.
(LPC1768/66/65 only)
I/O
SCK1 — Serial Clock for SSP1.
O
MAT2[1] — Match output for Timer 2, channel 1.
I/O
P0[8] — General purpose digital input/output pin.
I/O
I2STX_WS — Transmit Word Select. It is driven by the master and received by the
slave. Corresponds to the signal WS in the I2S-bus specification. (LPC1768/66/65
only).
I/O
MISO1 — Master In Slave Out for SSP1.
P0[6]/
I2SRX_SDA/
SSEL1/MAT2[0]
P0[7]/
I2STX_CLK/
SCK1/MAT2[1]
P0[8]/
I2STX_WS/
MISO1/MAT2[2]
P0[9]/
I2STX_SDA/
MOSI1/MAT2[3]
P0[10]/TXD2/
SDA2/MAT3[0]
P0[11]/RXD2/
SCL2/MAT3[1]
P0[15]/TXD1/
SCK0/SCK
79[1]
78[1]
77[1]
76[1]
48[1]
49[1]
62[1]
O
MAT2[2] — Match output for Timer 2, channel 2.
I/O
P0[9] — General purpose digital input/output pin.
I/O
I2STX_SDA — Transmit data. It is driven by the transmitter and read by the
receiver. Corresponds to the signal SD in the I2S-bus specification.
(LPC1768/66/65 only).
I/O
MOSI1 — Master Out Slave In for SSP1.
O
MAT2[3] — Match output for Timer 2, channel 3.
I/O
P0[10] — General purpose digital input/output pin.
O
TXD2 — Transmitter output for UART2.
I/O
SDA2 — I2C2 data input/output (this is not an open-drain pin).
O
MAT3[0] — Match output for Timer 3, channel 0.
I/O
P0[11] — General purpose digital input/output pin.
I
RXD2 — Receiver input for UART2.
I/O
SCL2 — I2C2 clock input/output (this is not an open-drain pin).
O
MAT3[1] — Match output for Timer 3, channel 1.
I/O
P0[15] — General purpose digital input/output pin.
O
TXD1 — Transmitter output for UART1.
I/O
SCK0 — Serial clock for SSP0.
I/O
SCK — Serial clock for SPI.
LPC1768_66_65_64_2
Objective data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 11 February 2009
7 of 72
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
Table 3.
Pin description …continued
Symbol
Pin
Type
Description
P0[16]/RXD1/
SSEL0/SSEL
63[1]
I/O
P0[16] — General purpose digital input/output pin.
I
RXD1 — Receiver input for UART1.
I/O
SSEL0 — Slave Select for SSP0.
I/O
SSEL — Slave Select for SPI.
I/O
P0[17] — General purpose digital input/output pin.
I
CTS1 — Clear to Send input for UART1.
I/O
MISO0 — Master In Slave Out for SSP0.
I/O
MISO — Master In Slave Out for SPI.
I/O
P0[18] — General purpose digital input/output pin.
I
DCD1 — Data Carrier Detect input for UART1.
I/O
MOSI0 — Master Out Slave In for SSP0.
I/O
MOSI — Master Out Slave In for SPI.
I/O
P0[19] — General purpose digital input/output pin.
I
DSR1 — Data Set Ready input for UART1.
I/O
SDA1 — I2C1 data input/output (this is not an I2C-bus compliant open-drain pin).
P0[17]/CTS1/
MISO0/MISO
P0[18]/DCD1/
MOSI0/MOSI
P0[19]/DSR1/
SDA1
61[1]
60[1]
59[1]
P0[20]/DTR1/SCL1 58[1]
P0[21]/RI1/RD1
P0[22]/RTS1/TD1
57[1]
56[1]
P0[23]/AD0[0]/
I2SRX_CLK/
CAP3[0]
9[2]
P0[24]/AD0[1]/
I2SRX_WS/
CAP3[1]
8[2]
P0[25]/AD0[2]/
I2SRX_SDA/
TXD3
7[2]
I/O
P0[20] — General purpose digital input/output pin.
O
DTR1 — Data Terminal Ready output for UART1.
I/O
SCL1 — I2C1 clock input/output (this is not an I2C-bus compliant open-drain pin).
I/O
P0[21] — General purpose digital input/output pin.
I
RI1 — Ring Indicator input for UART1.
I
RD1 — CAN1 receiver input.
I/O
P0[22] — General purpose digital input/output pin.
O
RTS1 — Request to Send output for UART1.
O
TD1 — CAN1 transmitter output.
I/O
P0[23] — General purpose digital input/output pin.
I
AD0[0] — A/D converter 0, input 0.
I/O
I2SRX_CLK — Receive Clock. It is driven by the master and received by the
slave. Corresponds to the signal SCK in the I2S-bus specification.
(LPC1768/66/65 only).
I
CAP3[0] — Capture input for Timer 3, channel 0.
I/O
P0[24] — General purpose digital input/output pin.
I
AD0[1] — A/D converter 0, input 1.
I/O
I2SRX_WS — Receive Word Select. It is driven by the master and received by the
slave. Corresponds to the signal WS in the I2S-bus specification. (LPC1768/66/65
only).
I
CAP3[1] — Capture input for Timer 3, channel 1.
I/O
P0[25] — General purpose digital input/output pin.
I
AD0[2] — A/D converter 0, input 2.
I/O
I2SRX_SDA — Receive data. It is driven by the transmitter and read by the
receiver. Corresponds to the signal SD in the I2S-bus specification.
(LPC1768/66/65 only).
O
TXD3 — Transmitter output for UART3.
LPC1768_66_65_64_2
Objective data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 11 February 2009
8 of 72
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
Table 3.
Pin description …continued
Symbol
Pin
Type
Description
P0[26]/AD0[3]/
AOUT/RXD3
6[3]
I/O
P0[26] — General purpose digital input/output pin.
I
AD0[3] — A/D converter 0, input 3.
O
AOUT — DAC output (LPC1768/66/65 only).
I
RXD3 — Receiver input for UART3.
I/O
P0[27] — General purpose digital input/output pin. Output is open-drain.
I/O
SDA0 — I2C0 data input/output. Open-drain output (for I2C-bus compliance).
I/O
USB_SDA — USB port I2C serial data (OTG transceiver, LPC1768/66/65 only).
(LPC1768/66/65 only).
I/O
P0[28] — General purpose digital input/output pin. Output is open-drain.
I/O
SCL0 — I2C0 clock input/output. Open-drain output (for I2C-bus compliance).
I/O
USB_SCL — USB port I2C serial clock (OTG transceiver, LPC1768/66/65 only).
P0[27]/SDA0/
USB_SDA
P0[28]/SCL0/
USB_SCL
P0[29]/USB_D+
P0[30]/USB_D−
25[4]
24[4]
29[5]
30[5]
P1[0] to P1[31]
P1[0]/
ENET_TXD0
95[1]
P1[1]/
ENET_TXD1
94[1]
P1[4]/
ENET_TX_EN
93[1]
P1[8]/
ENET_CRS
92[1]
P1[9]/
ENET_RXD0
91[1]
P1[10]/
ENET_RXD1
90[1]
P1[14]/
ENET_RX_ER
89[1]
P1[15]/
ENET_REF_CLK
88[1]
P1[16]/
ENET_MDC
87[1]
P1[17]/
ENET_MDIO
86[1]
I/O
P0[29] — General purpose digital input/output pin.
I/O
USB_D+ — USB bidirectional D+ line.
I/O
P0[30] — General purpose digital input/output pin.
I/O
USB_D− — USB bidirectional D− line.
I/O
Port 1: Port 1 is a 32-bit I/O port with individual direction controls for each bit. The
operation of port 1 pins depends upon the pin function selected via the pin connect
block. Pins 2, 3, 5, 6, 7, 11, 12, and 13 of this port are not available.
I/O
P1[0] — General purpose digital input/output pin.
O
ENET_TXD0 — Ethernet transmit data 0. (LPC1768/66/64 only).
I/O
P1[1] — General purpose digital input/output pin.
O
ENET_TXD1 — Ethernet transmit data 1. (LPC1768/66/64 only).
I/O
P1[4] — General purpose digital input/output pin.
O
ENET_TX_EN — Ethernet transmit data enable. (LPC1768/66/64 only).
I/O
P1[8] — General purpose digital input/output pin.
I
ENET_CRS — Ethernet carrier sense. (LPC1768/66/64 only).
I/O
P1[9] — General purpose digital input/output pin.
I
ENET_RXD0 — Ethernet receive data. (LPC1768/66/64 only).
I/O
P1[10] — General purpose digital input/output pin.
I
ENET_RXD1 — Ethernet receive data. (LPC1768/66/64 only).
I/O
P1[14] — General purpose digital input/output pin.
I
ENET_RX_ER — Ethernet receive error. (LPC1768/66/64 only).
I/O
P1[15] — General purpose digital input/output pin.
I
ENET_REF_CLK — Ethernet reference clock. (LPC1768/66/64 only).
I/O
P1[16] — General purpose digital input/output pin.
O
ENET_MDC — Ethernet MIIM clock (LPC1768/66/64 only).
I/O
P1[17] — General purpose digital input/output pin.
I/O
ENET_MDIO — Ethernet MIIM data input and output. (LPC1768/66/64 only).
LPC1768_66_65_64_2
Objective data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 11 February 2009
9 of 72
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
Table 3.
Pin description …continued
Symbol
Pin
Type
Description
P1[18]/
USB_UP_LED/
PWM1[1]/
CAP1[0]
32[1]
I/O
P1[18] — General purpose digital input/output pin.
O
USB_UP_LED — USB GoodLink LED indicator. It is LOW when device is
configured (non-control endpoints enabled). It is HIGH when the device is not
configured or during global suspend.
O
PWM1[1] — Pulse Width Modulator 1, channel 1 output.
I
CAP1[0] — Capture input for Timer 1, channel 0.
I/O
P1[19] — General purpose digital input/output pin.
O
MC0A — Motor control PWM channel 0, output A.
O
USB_PPWR — Port Power enable signal for USB port (LPC1768/66/65 only).
I
CAP1[1] — Capture input for Timer 1, channel 1.
I/O
P1[20] — General purpose digital input/output pin.
I
MCFB0 — Motor control PWM channel 0, feedback input. Also Quadrature
Encoder Interface PHA input.
O
PWM1[2] — Pulse Width Modulator 1, channel 2 output.
I/O
SCK0 — Serial clock for SSP0.
P1[19]/MC0A/
USB_PPWR
CAP1[1]
33[1]
P1[20]/MCFB0/
PWM1[2]/SCK0
34[1]
P1[21]/MCABORT/
PWM1[3]/
SSEL0
35[1]
P1[22]/MC0B/
USB_PWRD/
MAT1[0]
36[1]
P1[23]/MCFB1/
PWM1[4]/MISO0
37[1]
P1[24]/MCFB2/
PWM1[5]/MOSI0
P1[25]/MC1A/
MAT1[1]
P1[26]/MC1B/
PWM1[6]/CAP0[0]
38[1]
39[1]
40[1]
I/O
P1[21] — General purpose digital input/output pin.
O
MCABORT — Motor control PWM, emergency abort.
O
PWM1[3] — Pulse Width Modulator 1, channel 3 output.
I/O
SSEL0 — Slave Select for SSP0.
I/O
P1[22] — General purpose digital input/output pin.
O
MC0B — Motor control PWM channel 0, output B.
I
USB_PWRD — Power Status for USB port (host power switch, LPC1768/66/65
only).
O
MAT1[0] — Match output for Timer 1, channel 0.
I/O
P1[23] — General purpose digital input/output pin.
I
MCFB1 — Motor control PWM channel 1, feedback input. Also Quadrature
Encoder Interface PHB input.
O
PWM1[4] — Pulse Width Modulator 1, channel 4 output.
I/O
MISO0 — Master In Slave Out for SSP0.
I/O
P1[24] — General purpose digital input/output pin.
I
MCFB2 — Motor control PWM channel 2, feedback input. Also Quadrature
Encoder Interface INDEX input.
O
PWM1[5] — Pulse Width Modulator 1, channel 5 output.
I/O
MOSI0 — Master Out Slave in for SSP0.
I/O
P1[25] — General purpose digital input/output pin.
O
MC1A — Motor control PWM channel 1, output A.
O
MAT1[1] — Match output for Timer 1, channel 1.
I/O
P1[26] — General purpose digital input/output pin.
O
MC1B — Motor control PWM channel 1, output B.
O
PWM1[6] — Pulse Width Modulator 1, channel 6 output.
I
CAP0[0] — Capture input for Timer 0, channel 0.
LPC1768_66_65_64_2
Objective data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 11 February 2009
10 of 72
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
Table 3.
Pin description …continued
Symbol
Pin
Type
Description
P1[27]/CLKOUT
/USB_OVRCR/
CAP0[1]
43[1]
I/O
P1[27] — General purpose digital input/output pin.
O
CLKOUT — Clock output pin.
I
USB_OVRCR — USB port Over-Current status. (LPC1768/66/65 only).
P1[28]/MC2A
1[0]/
MAT0[0]
44[1]
P1[29]/MC2B/
PCAP1[1]/
MAT0[1]
45[1]
P1[30]/VBUS/
AD0[4]
21[2]
I
CAP0[1] — Capture input for Timer 0, channel 1.
I/O
P1[28] — General purpose digital input/output pin.
O
MC2A — Motor control PWM channel 2, output A.
I
PCAP1[0] — Capture input for PWM1, channel 0.
O
MAT0[0] — Match output for Timer 0, channel 0.
I/O
P1[29] — General purpose digital input/output pin.
O
MC2B — Motor control PWM channel 2, output B.
I
PCAP1[1] — Capture input for PWM1, channel 1.
O
MAT0[1] — Match output for Timer 0, channel 0.
I/O
P1[30] — General purpose digital input/output pin.
I
VBUS — Monitors the presence of USB bus power.
Note: This signal must be HIGH for USB reset to occur.
P1[31]/SCK1/
AD0[5]
20[2]
P2[0] to P2[31]
P2[0]/PWM1[1]/
TXD1
75[1]
P2[1]/PWM1[2]/
RXD1
74[1]
P2[2]/PWM1[3]/
CTS1/
TRACEDATA[3]
P2[3]/PWM1[4]/
DCD1/
TRACEDATA[2]
P2[4]/PWM1[5]/
DSR1/
TRACEDATA[1]
73[1]
70[1]
69[1]
I
AD0[4] — A/D converter 0, input 4.
I/O
P1[31] — General purpose digital input/output pin.
I/O
SCK1 — Serial Clock for SSP1.
I
AD0[5] — A/D converter 0, input 5.
I/O
Port 2: Port 2 is a 32-bit I/O port with individual direction controls for each bit. The
operation of port 2 pins depends upon the pin function selected via the pin connect
block. Pins 14 through 31 of this port are not available.
I/O
P2[0] — General purpose digital input/output pin.
O
PWM1[1] — Pulse Width Modulator 1, channel 1 output.
O
TXD1 — Transmitter output for UART1.
I/O
P2[1] — General purpose digital input/output pin.
O
PWM1[2] — Pulse Width Modulator 1, channel 2 output.
I
RXD1 — Receiver input for UART1.
I/O
P2[2] — General purpose digital input/output pin.
O
PWM1[3] — Pulse Width Modulator 1, channel 3 output.
I
CTS1 — Clear to Send input for UART1.
O
TRACEDATA[3] — Trace data, bit 3.
I/O
P2[3] — General purpose digital input/output pin.
O
PWM1[4] — Pulse Width Modulator 1, channel 4 output.
I
DCD1 — Data Carrier Detect input for UART1.
O
TRACEDATA[2] — Trace data, bit 2.
I/O
P2[4] — General purpose digital input/output pin.
O
PWM1[5] — Pulse Width Modulator 1, channel 5 output.
I
DSR1 — Data Set Ready input for UART1.
O
TRACEDATA[1] — Trace data, bit 1.
LPC1768_66_65_64_2
Objective data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 11 February 2009
11 of 72
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
Table 3.
Pin description …continued
Symbol
Pin
Type
Description
P2[5]/PWM1[6]/
DTR1/
TRACEDATA[0]
68[1]
I/O
P2[5] — General purpose digital input/output pin.
O
PWM1[6] — Pulse Width Modulator 1, channel 6 output.
O
DTR1 — Data Terminal Ready output for UART1.
O
TRACEDATA[0] — Trace data, bit 0.
P2[6]/PCAP1[0]/
RI1/TRACECLK
67[1]
I/O
P2[6] — General purpose digital input/output pin.
I
PCAP1[0] — Capture input for PWM1, channel 0.
I
RI1 — Ring Indicator input for UART1.
O
TRACECLK — Trace Clock.
I/O
P2[7] — General purpose digital input/output pin.
I
RD2 — CAN2 receiver input.
O
RTS1 — Request to Send output for UART1.
P2[7]/RD2/
RTS1
66[1]
P2[8]/TD2/
TXD2
65[1]
P2[9]/
USB_CONNECT/
RXD2
64[1]
P2[10]/EINT0/NMI
53[6]
I/O
P2[8] — General purpose digital input/output pin.
O
TD2 — CAN2 transmitter output.
O
TXD2 — Transmitter output for UART2.
I/O
P2[9] — General purpose digital input/output pin.
O
USB_CONNECT — Signal used to switch an external 1.5 kΩ resistor under
software control. Used with the SoftConnect USB feature.
I
RXD2 — Receiver input for UART2.
I/O
P2[10] — General purpose digital input/output pin.
Note: LOW on this pin while RESET is LOW forces on-chip bootloader to take
over control of the part after a reset.
I
P2[11]/EINT1/
I2STX_CLK
P2[12]/EINT2/
I2STX_WS
P2[13]/EINT3/
I2STX_SDA
52[6]
51[6]
50[6]
P3[0] to P3[31]
P3[25]/MAT0[0]/
PWM1[2]
27[1]
EINT0 — External interrupt 0 input.
I
NMI — Non-maskable interrupt input.
I/O
P2[11] — General purpose digital input/output pin.
I
EINT1 — External interrupt 1 input.
I/O
I2STX_CLK — Transmit Clock. It is driven by the master and received by the
slave. Corresponds to the signal SCK in the I2S-bus specification.
(LPC1768/66/65 only).
I/O
P2[12] — General purpose digital input/output pin.
I
EINT2 — External interrupt 2 input.
I/O
I2STX_WS — Transmit Word Select. It is driven by the master and received by the
slave. Corresponds to the signal WS in the I2S-bus specification. (LPC1768/66/65
only).
I/O
P2[13] — General purpose digital input/output pin.
I
EINT3 — External interrupt 3 input.
I/O
I2STX_SDA — Transmit data. It is driven by the transmitter and read by the
receiver. Corresponds to the signal SD in the I2S-bus specification.
(LPC1768/66/65 only).
I/O
Port 3: Port 3 is a 32-bit I/O port with individual direction controls for each bit. The
operation of port 3 pins depends upon the pin function selected via the pin connect
block. Pins 0 through 24, and 27 through 31 of this port are not available.
I/O
P3[25] — General purpose digital input/output pin.
O
MAT0[0] — Match output for Timer 0, channel 0.
O
PWM1[2] — Pulse Width Modulator 1, output 2.
LPC1768_66_65_64_2
Objective data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 11 February 2009
12 of 72
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
Table 3.
Pin description …continued
Symbol
Pin
Type
Description
P3[26]/STCLK/
MAT0[1]/PWM1[3]
26[1]
I/O
P3[26] — General purpose digital input/output pin.
I
STCLK — System tick timer clock input.
O
MAT0[1] — Match output for Timer 0, channel 1.
O
PWM1[3] — Pulse Width Modulator 1, output 3.
I/O
Port 4: Port 4 is a 32-bit I/O port with individual direction controls for each bit. The
operation of port 4 pins depends upon the pin function selected via the pin connect
block. Pins 0 through 27, 30, and 31 of this port are not available.
P4[0] to P4[31]
P4[28]/RX_MCLK/
MAT2[0]/TXD3
P4[29]/TX_MCLK/
MAT2[1]/RXD3
TDO/SWO
82[1]
85[1]
1[1]
I/O
P4[28] — General purpose digital input/output pin.
I
RX_MCLK — I2S receive master clock. (LPC1768/66/65 only).
O
MAT2[0] — Match output for Timer 2, channel 0.
O
TXD3 — Transmitter output for UART3.
I/O
P4[29] — General purpose digital input/output pin.
I
TX_MCLK — I2S transmit master clock. (LPC1768/66/65 only).
O
MAT2[1] — Match output for Timer 2, channel 1.
I
RXD3 — Receiver input for UART3.
O
TDO — Test Data out for JTAG interface.
O
SWO — Serial wire trace output.
TDI
2[1]
I
TDI — Test Data in for JTAG interface.
TMS/SWDIO
3[1]
I
TMS — Test Mode Select for JTAG interface.
I/O
SWDIO — Serial wire debug data input/output.
TRST
4[1]
I
TRST — Test Reset for JTAG interface.
TCK/SWDCLK
5[1]
I
TCK — Test Clock for JTAG interface.
I
SWDCLK — Serial wire clock.
RTCK
100[1]
I/O
RTCK — JTAG interface control signal.
RSTOUT
14
O
RSTOUT — This is a 3.3 V pin. LOW on this pin indicates LPC1768/66/65/64
being in Reset state.
RESET
17[7]
I
External reset input: A LOW on this pin resets the device, causing I/O ports and
peripherals to take on their default states, and processor execution to begin at
address 0. TTL with hysteresis, 5 V tolerant.
XTAL1
22[8]
I
Input to the oscillator circuit and internal clock generator circuits.
XTAL2
23[8]
O
Output from the oscillator amplifier.
RTCX1
16[8]
I
Input to the RTC oscillator circuit.
RTCX2
18[8]
O
Output from the RTC oscillator circuit.
VSS
31, 41,
55, 72,
97, 83[8]
I
ground: 0 V reference.
VSSA
11[8]
I
analog ground: 0 V reference. This should nominally be the same voltage as VSS,
but should be isolated to minimize noise and error.
VDD(3V3)
28, 54,
71, 96[8]
I
3.3 V supply voltage: This is the power supply voltage for the I/O ports.
VDD(REG)(3V3)
42, 84[8]
I
3.3 V voltage regulator supply voltage: This is the supply voltage for the on-chip
voltage regulator only.
LPC1768_66_65_64_2
Objective data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 11 February 2009
13 of 72
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
Table 3.
Pin description …continued
Symbol
Pin
Type
Description
VDDA
10[8]
I
analog 3.3 V pad supply voltage: This should be nominally the same voltage as
VDD(3V3) but should be isolated to minimize noise and error. This voltage is used to
power the ADC and DAC.
VREFP
12[8]
I
ADC positive reference voltage: This should be nominally the same voltage as
VDDA but should be isolated to minimize noise and error. Level on this pin is used
as a reference for ADC and DAC.
VREFN
15
I
ADC negative reference voltage: This should be nominally the same voltage as
VSS but should be isolated to minimize noise and error. Level on this pin is used as
a reference for ADC and DAC.
VBAT
19[8]
I
RTC pin power supply: 3.3 V on this pin supplies the power to the RTC
peripheral.
n.c.
13
-
not connected
[1]
5 V tolerant pad providing digital I/O functions with TTL levels and hysteresis.
[2]
5 V tolerant pad providing digital I/O functions (with TTL levels and hysteresis) and analog input. When configured as a ADC input,
digital section of the pad is disabled.
[3]
5 V tolerant pad providing digital I/O with TTL levels and hysteresis and analog output function. When configured as the DAC output,
digital section of the pad is disabled.
[4]
Open-drain 5 V tolerant digital I/O pad, compatible with I2C-bus 400 kHz specification. This pad requires an external pull-up to provide
output functionality. When power is switched off, this pin connected to the I2C-bus is floating and does not disturb the I2C lines.
Open-drain configuration applies to all functions on this pin.
[5]
Pad provides digital I/O and USB functions. It is designed in accordance with the USB specification, revision 2.0 (Full-speed and
Low-speed mode only).
[6]
5 V tolerant pad with 5 ns glitch filter providing digital I/O functions with TTL levels and hysteresis.
[7]
5 V tolerant pad with 20 ns glitch filter providing digital I/O function with TTL levels and hysteresis.
[8]
Pad provides special analog functionality.
7. Functional description
7.1 Architectural overview
The ARM Cortex-M3 includes three AHB-Lite buses: the system bus, the I-code bus, and
the D-code bus (see Figure 1). The I-code and D-code core buses are faster than the
system bus and are used similarly to TCM interfaces: one bus dedicated for instruction
fetch (I-code) and one bus for data access (D-code). The use of two core buses allows for
simultaneous operations if concurrent operations target different devices.
The LPC1768/66/65/64 use a multi-layer AHB matrix to connect the ARM Cortex-M3
buses and other bus masters to peripherals in a flexible manner that optimizes
performance by allowing peripherals that are on different slaves ports of the matrix to be
accessed simultaneously by different bus masters.
7.2 ARM Cortex-M3 processor
The ARM Cortex-M3 is a general purpose, 32-bit microprocessor, which offers high
performance and very low power consumption. The ARM Cortex-M3 offers many new
features, including a Thumb-2 instruction set, low interrupt latency, hardware divide,
interruptable/continuable multiple load and store instructions, automatic state save and
restore for interrupts, tightly integrated interrupt controller with wakeup interrupt controller,
and multiple core buses capable of simultaneous accesses.
LPC1768_66_65_64_2
Objective data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 11 February 2009
14 of 72
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
Pipeline techniques are employed so that all parts of the processing and memory systems
can operate continuously. Typically, while one instruction is being executed, its successor
is being decoded, and a third instruction is being fetched from memory.
The ARM Cortex-M3 processor is described in detail in the Cortex-M3 Technical
Reference Manual that can be found on official ARM website.
7.3 On-chip flash program memory
The LPC1768/66/65/64 contain up to 512 kB of on-chip flash memory. A new two-port
flash accelerator maximizes performance for use with the two fast AHB-Lite buses.
7.4 On-chip SRAM
The LPC1768/66/65/64 contain a total of 64 kB on-chip static RAM memory. This includes
the main 32 kB SRAM, accessible by the CPU and DMA controller on a higher-speed bus,
and two additional 16 kB each SRAM blocks situated on a separate slave port on the AHB
multilayer matrix.
This architecture allows CPU and DMA accesses to be spread over three separate RAMs
that can be accessed simultaneously.
7.5 Memory Protection Unit (MPU)
The LPC1768/66/65/64 have a Memory Protection Unit (MPU) which can be used to
improve the reliability of an embedded system by protecting critical data within the user
application.
The MPU allows separating processing tasks by disallowing access to each other's data,
disabling access to memory regions, allowing memory regions to be defined as read-only
and detecting unexpected memory accesses that could potentially break the system.
The MPU separates the memory into distinct regions and implements protection by
preventing disallowed accesses. The MPU supports up to 8 regions each of which can be
divided into 8 subregions. Accesses to memory locations that are not defined in the MPU
regions, or not permitted by the region setting, will cause the Memory Management Fault
exception to take place.
7.6 Memory map
The LPC17xx incorporates several distinct memory regions, shown in the following
figures. Figure 3 shows the overall map of the entire address space from the user program
viewpoint following reset. The interrupt vector area supports address remapping.
The AHB peripheral area is 2 MB in size, and is divided to allow for up to 128 peripherals.
The APB peripheral area is 1 MB in size and is divided to allow for up to 64 peripherals.
Each peripheral of either type is allocated 16 kB of space. This allows simplifying the
address decoding for each peripheral.
LPC1768_66_65_64_2
Objective data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 11 February 2009
15 of 72
xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxx x x x xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xx xx
xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxx xxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxx x x
xxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxx
xxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx xxx
0x400F C000
31
4 GB
LPC1768/66/65/64 memory space
0xFFFF FFFF
system control
reserved
30 - 16 not used
0x400C 0000
Rev. 02 — 11 February 2009
15
QEI
0x400B 8000
14
motor control PWM
0x400B 4000
13
not used
0x400B 0000
12 repetitive interrupt timer
0x400A C000
11
not used
AHB peripherals
0x400A 8000
10
I2S(1)
reserved
0x400A 4000
9
not used
0x400A 0000
8
I2C2
0x4009 C000
7
UART3
0x4009 8000
6
UART2
0x4009 4000
5
Timer 3
0x4009 0000
4
Timer 2
0x4008 C000
3
DAC(1)
0x4008 8000
2
SSP0
private peripheral bus
127- 4 not used
0xE000 0000
reserved
0x5020 0000
0x5000 0000
reserved
APB1 peripherals
APB0 peripherals
0x4008 0000
reserved
1
GPDMA controller
0
Ethernet controller(2)
I-code/D-code
memory space
16 kB local static RAM (LPC1764)
16 of 72
© NXP B.V. 2009. All rights reserved.
+ 256 bytes
256 kB on-chip flash (LPC1766/65)
0 GB
LPC1768/66/65/64 memory map
128 kB on-chip flash (LPC1764)
0x4006 0000
0x4005 C000
0x4004 C000
0x4004 4000
16
CAN common
0x4004 0000
0x200A 0000
15
CAN AF registers
0x4003 C000
0x2009 C000
14
CAN AF RAM
0x4003 8000
0x2008 4000
13
ADC
0x4003 4000
0x2000 4000
12
SSP1
0x4003 0000
0x2007 C000
11
pin connect
0x4002 C000
10
GPIO interrupts
0x4002 8000
9
RTC + backup registers
0x4002 4000
0x1FFF 2000
8
SPI
0x4002 0000
0x1FFF 0000
7
not used
0x4001 C000
0x1000 8000
6
PWM1
0x4001 8000
0x1000 4000
5
not used
0x4001 4000
4
UART1
0x4001 0000
3
UART0
0x4000 C000
2
TIMER1
0x4000 8000
1
0
TIMER0
0x4000 4000
WDT
0x4000 0000
0x1000 0000
0x0008 0000
active interrupt vectors
0x4008 0000
0x4004 8000
reserved
512 kB on-chip flash (LPC1768)
0x5000 0000
0x0004 0000
0x0002 0000
0x0000 0000
002aad946
LPC1768/66/65/64
32 kB local static RAM (LPC1768/6/5)
0x5000 4000
32-bit ARM Cortex-M3 microcontroller
reserved
22 - 19 not used
0x5000 8000
CAN1
reserved
8 kB boot ROM
I2C1
0x5000 C000
17
0x2200 0000
16 kB AHB SRAM
23
0x5001 0000
CAN2
reserved
16 kB AHB SRAM1 (LPC1768/6/5)
31 - 24 not used
0x5020 0000
18
AHB SRAM bit band alias addressing
reserved
APB0 peripherals
0x4000 0000
0x2400 0000
0.5 GB
Fig 3.
2
0x4010 0000
reserved
(1)LPC1768/66/65 only
(2)LPC1768/66/64 only
0x0000 0000
USB controller
0x4200 0000
GPIO
0x0000 0100
3
0x4400 0000
peripheral bit band alias addressing
1 - 0 reserved
0x4008 0000
AHB peripherals
0xE010 0000
0x400B C000
1 GB
NXP Semiconductors
LPC1768_66_65_64_2
Objective data sheet
APB1 peripherals
0x4010 0000
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
7.7 Nested Vectored Interrupt Controller (NVIC)
The NVIC is an integral part of the Cortex-M3. The tight coupling to the CPU allows for low
interrupt latency and efficient processing of late arriving interrupts.
7.7.1 Features
•
•
•
•
•
•
Controls system exceptions and peripheral interrupts
In the LPC1768/66/65/64, the NVIC supports 33 vectored interrupts
32 programmable interrupt priority levels, with hardware priority level masking
Relocatable vector table
Non-Maskable Interrupt (NMI)
Software interrupt generation
7.7.2 Interrupt sources
Each peripheral device has one interrupt line connected to the NVIC but may have several
interrupt flags. Individual interrupt flags may also represent more than one interrupt
source.
Any pin on PORT0 and PORT2 (total of 42 pins) regardless of the selected function, can
be programmed to generate an interrupt on a rising edge, a falling edge, or both.
7.8 Pin connect block
The pin connect block allows selected pins of the microcontroller to have more than one
function. Configuration registers control the multiplexers to allow connection between the
pin and the on-chip peripherals.
Peripherals should be connected to the appropriate pins prior to being activated and prior
to any related interrupt(s) being enabled. Activity of any enabled peripheral function that is
not mapped to a related pin should be considered undefined.
Most pins can also be configured as open-drain outputs or to have a pull-up, pull-down, or
no resistor enabled.
7.9 General purpose DMA controller
The GPDMA is an AMBA AHB compliant peripheral allowing selected LPC1768/66/65/64
peripherals to have DMA support.
The GPDMA enables peripheral-to-memory, memory-to-peripheral,
peripheral-to-peripheral, and memory-to-memory transactions. The source and
destination areas can each be either a memory region or a peripheral, and can be
accessed through the AHB master. The GPDMA controller allows data transfers between
the USB (LPC1768/66/65 only) and Ethernet controllers (LPC1768/66/64 only) and the
various on-chip SRAM areas. The supported APB peripherals are SSP0/1, all UARTs, the
I2S-bus interface, the ADC, and the DAC. Two match signals for each timer can be used to
trigger DMA transfers. Note that the I2S-bus interface and the DAC are not available on
the LPC1764.
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7.9.1 Features
• Eight DMA channels. Each channel can support an unidirectional transfer.
• 16 DMA request lines.
• Single DMA and burst DMA request signals. Each peripheral connected to the DMA
Controller can assert either a burst DMA request or a single DMA request. The DMA
burst size is set by programming the DMA Controller.
• Memory-to-memory, memory-to-peripheral, peripheral-to-memory, and
peripheral-to-peripheral transfers are supported.
• Scatter or gather DMA is supported through the use of linked lists. This means that
the source and destination areas do not have to occupy contiguous areas of memory.
• Hardware DMA channel priority.
• AHB slave DMA programming interface. The DMA Controller is programmed by
writing to the DMA control registers over the AHB slave interface.
• One AHB bus master for transferring data. The interface transfers data when a DMA
request goes active.
• 32-bit AHB master bus width.
• Incrementing or non-incrementing addressing for source and destination.
• Programmable DMA burst size. The DMA burst size can be programmed to more
efficiently transfer data.
• Internal four-word FIFO per channel.
• Supports 8, 16, and 32-bit wide transactions.
• Big-endian and little-endian support. The DMA Controller defaults to little-endian
mode on reset.
• An interrupt to the processor can be generated on a DMA completion or when a DMA
error has occurred.
• Raw interrupt status. The DMA error and DMA count raw interrupt status can be read
prior to masking.
7.10 Fast general purpose parallel I/O
Device pins that are not connected to a specific peripheral function are controlled by the
GPIO registers. Pins may be dynamically configured as inputs or outputs. Separate
registers allow setting or clearing any number of outputs simultaneously. The value of the
output register may be read back as well as the current state of the port pins.
LPC1768/66/65/64 use accelerated GPIO functions:
• GPIO registers are a dedicated AHB peripheral and are accessed through the AHB
multilayer bus so that the fastest possible I/O timing can be achieved.
• Mask registers allow treating sets of port bits as a group, leaving other bits
unchanged.
• All GPIO registers are byte and half-word addressable.
• Entire port value can be written in one instruction.
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Additionally, any pin on PORT0 and PORT2 (total of 42 pins) providing a digital function
can be programmed to generate an interrupt on a rising edge, a falling edge, or both. The
edge detection is asynchronous, so it may operate when clocks are not present such as
during Power-down mode. Each enabled interrupt can be used to wake up the chip from
Power-down mode.
7.10.1 Features
• Bit level set and clear registers allow a single instruction to set or clear any number of
bits in one port.
• Direction control of individual bits.
• All I/O default to inputs after reset.
• Pull-up/pull-down resistor configuration and open-drain configuration can be
programmed through the pin connect block for each GPIO pin.
7.11 Ethernet (LPC1768/66/64 only)
Remark: The Ethernet controller is not available for part LPC1765.
The Ethernet block contains a full featured 10 Mbit/s or 100 Mbit/s Ethernet MAC
designed to provide optimized performance through the use of DMA hardware
acceleration. Features include a generous suite of control registers, half or full duplex
operation, flow control, control frames, hardware acceleration for transmit retry, receive
packet filtering and wake-up on LAN activity. Automatic frame transmission and reception
with scatter-gather DMA off-loads many operations from the CPU.
The Ethernet block and the CPU share the ARM Cortex-M3 D-code and system bus
through the AHB-multilayer matrix to access the various on-chip SRAM blocks for
Ethernet data, control, and status information.
The Ethernet block interfaces between an off-chip Ethernet PHY using the Reduced MII
(RMII) protocol and the on-chip Media Independent Interface Management (MIIM) serial
bus.
The Ethernet block supports bus clock rates of up to 100 MHz.
7.11.1 Features
• Ethernet standards support:
– Supports 10 Mbit/s or 100 Mbit/s PHY devices including 10 Base-T, 100 Base-TX,
100 Base-FX, and 100 Base-T4.
– Fully compliant with IEEE standard 802.3.
– Fully compliant with 802.3x full duplex flow control and half duplex back pressure.
– Flexible transmit and receive frame options.
– Virtual Local Area Network (VLAN) frame support.
• Memory management:
– Independent transmit and receive buffers memory mapped to shared SRAM.
– DMA managers with scatter/gather DMA and arrays of frame descriptors.
– Memory traffic optimized by buffering and pre-fetching.
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• Enhanced Ethernet features:
– Receive filtering.
– Multicast and broadcast frame support for both transmit and receive.
– Optional automatic Frame Check Sequence (FCS) insertion with Cyclic
Redundancy Check (CRC) for transmit.
– Selectable automatic transmit frame padding.
– Over-length frame support for both transmit and receive allows any length frames.
– Promiscuous receive mode.
– Automatic collision back-off and frame retransmission.
– Includes power management by clock switching.
– Wake-on-LAN power management support allows system wake-up: using the
receive filters or a magic frame detection filter.
• Physical interface:
– Attachment of external PHY chip through standard RMII interface.
– PHY register access is available via the MIIM interface.
7.12 USB interface
The Universal Serial Bus (USB) is a 4-wire bus that supports communication between a
host and one or more (up to 127) peripherals. The host controller allocates the USB
bandwidth to attached devices through a token-based protocol. The bus supports hot
plugging and dynamic configuration of the devices. All transactions are initiated by the
host controller.
The LPC1768/66/65/64 USB interface includes a device, Host, and OTG controller with
on-chip PHY for device and Host functions. The OTG switching protocol is supported
through the use of an external controller. Details on typical USB interfacing solutions can
be found in Section 14.1.
Remark: The LPC1764 includes a device controller only.
7.12.1 USB device controller
The device controller enables 12 Mbit/s data exchange with a USB Host controller. It
consists of a register interface, serial interface engine, endpoint buffer memory, and a
DMA controller. The serial interface engine decodes the USB data stream and writes data
to the appropriate endpoint buffer. The status of a completed USB transfer or error
condition is indicated via status registers. An interrupt is also generated if enabled. When
enabled, the DMA controller transfers data between the endpoint buffer and the on-chip
SRAM.
7.12.1.1
Features
•
•
•
•
Fully compliant with USB 2.0 specification (full speed).
Supports 32 physical (16 logical) endpoints with a 4 kB endpoint buffer RAM.
Supports Control, Bulk, Interrupt and Isochronous endpoints.
Scalable realization of endpoints at run time.
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• Endpoint Maximum packet size selection (up to USB maximum specification) by
software at run time.
• Supports SoftConnect and GoodLink features.
• While USB is in the Suspend mode, the LPC1768/66/65/64 can enter one of the
reduced power modes and wake up on USB activity.
• Supports DMA transfers with all on-chip SRAM blocks on all non-control endpoints.
• Allows dynamic switching between CPU-controlled slave and DMA modes.
• Double buffer implementation for Bulk and Isochronous endpoints.
7.12.2 USB host controller (LPC1768/66/65 only)
The host controller enables full- and low-speed data exchange with USB devices attached
to the bus. It consists of a register interface, a serial interface engine, and a DMA
controller. The register interface complies with the OHCI specification.
7.12.2.1
Features
• OHCI compliant.
• One downstream port.
• Supports port power switching.
7.12.3 USB OTG controller (LPC1768/66/65 only)
USB OTG is a supplement to the USB 2.0 specification that augments the capability of
existing mobile devices and USB peripherals by adding host functionality for connection to
USB peripherals.
The OTG Controller integrates the host controller, device controller, and a master-only
I2C-bus interface to implement OTG dual-role device functionality. The dedicated I2C-bus
interface controls an external OTG transceiver.
7.12.3.1
Features
• Fully compliant with On-The-Go supplement to the USB 2.0 Specification, Revision
1.0a.
• Hardware support for Host Negotiation Protocol (HNP).
• Includes a programmable timer required for HNP and Session Request Protocol
(SRP).
• Supports any OTG transceiver compliant with the OTG Transceiver Specification
(CEA-2011), Rev. 1.0.
7.13 CAN controller and acceptance filters
The Controller Area Network (CAN) is a serial communications protocol which efficiently
supports distributed real-time control with a very high level of security. Its domain of
application ranges from high-speed networks to low cost multiplex wiring.
The CAN block is intended to support multiple CAN buses simultaneously, allowing the
device to be used as a gateway, switch, or router among a number of CAN buses in
industrial or automotive applications.
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7.13.1 Features
•
•
•
•
•
Two CAN controllers and buses.
Data rates to 1 Mbit/s on each bus.
32-bit register and RAM access.
Compatible with CAN specification 2.0B, ISO 11898-1.
Global Acceptance Filter recognizes standard (11-bit) and extended-frame (29-bit)
receive identifiers for all CAN buses.
• Acceptance Filter can provide FullCAN-style automatic reception for selected
Standard Identifiers.
• FullCAN messages can generate interrupts.
7.14 12-bit ADC
The LPC1768/66/65/64 contain one ADC. It is a single 12-bit successive approximation
ADC with eight channels and DMA support.
7.14.1 Features
•
•
•
•
•
•
•
•
•
•
12-bit successive approximation ADC.
Input multiplexing among 8 pins.
Power-down mode.
Measurement range VREFN to Vi(VREFP).
12-bit conversion rate: 1 MHz.
Individual channels can be selected for conversion.
Burst conversion mode for single or multiple inputs.
Optional conversion on transition of input pin or Timer Match signal.
Individual result registers for each ADC channel to reduce interrupt overhead.
DMA support.
7.15 10-bit DAC (LPC1768/66/65 only)
The DAC allows to generate a variable analog output. The maximum output value of the
DAC is Vi(VREFP).
7.15.1 Features
•
•
•
•
•
•
•
10-bit DAC
Resistor string architecture
Buffered output
Power-down mode
Selectable output drive
Dedicated conversion timer
DMA support
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7.16 UARTs
The LPC1768/66/65/64 each contain four UARTs. In addition to standard transmit and
receive data lines, UART1 also provides a full modem control handshake interface.
Support for RS-485/9-bit mode allows both software address detection and automatic
address detection using 9-bit mode.
The UARTs include a fractional baud rate generator. Standard baud rates such as
115200 Bd can be achieved with any crystal frequency above 2 MHz.
7.16.1 Features
•
•
•
•
16 B Receive and Transmit FIFOs.
Register locations conform to 16C550 industry standard.
Receiver FIFO trigger points at 1 B, 4 B, 8 B, and 14 B.
Built-in fractional baud rate generator covering wide range of baud rates without a
need for external crystals of particular values.
• Fractional divider for baud rate control, auto baud capabilities and FIFO control
mechanism that enables software flow control implementation.
• UART1 equipped with standard modem interface signals. This module also provides
full support for hardware flow control (auto-CTS/RTS).
• Support for RS-485/9-bit mode.
• UART3 includes an IrDA mode to support infrared communication.
• All UARTs have DMA support.
7.17 SPI serial I/O controller
The LPC1768/66/65/64 contain one SPI controller. SPI is a full duplex serial interface
designed to handle multiple masters and slaves connected to a given bus. Only a single
master and a single slave can communicate on the interface during a given data transfer.
During a data transfer the master always sends 8 bits to 16 bits of data to the slave, and
the slave always sends 8 bits to 16 bits of data to the master.
7.17.1 Features
•
•
•
•
•
Compliant with SPI specification
Synchronous, serial, full duplex communication
Combined SPI master and slave
Maximum data bit rate of one eighth of the input clock rate
8 bits to 16 bits per transfer
7.18 SSP serial I/O controller
The LPC1768/66/65/64 contain two SSP controllers. The SSP controller is capable of
operation on a SPI, 4-wire SSI, or Microwire bus. It can interact with multiple masters and
slaves on the bus. Only a single master and a single slave can communicate on the bus
during a given data transfer. The SSP supports full duplex transfers, with frames of 4 bits
to 16 bits of data flowing from the master to the slave and from the slave to the master. In
practice, often only one of these data flows carries meaningful data.
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7.18.1 Features
• Compatible with Motorola SPI, 4-wire Texas Instruments SSI, and National
Semiconductor Microwire buses
•
•
•
•
•
Synchronous serial communication
Master or slave operation
8-frame FIFOs for both transmit and receive
4-bit to 16-bit frame
DMA transfers supported by GPDMA
7.19 I2C-bus serial I/O controllers
The LPC1768/66/65/64 each contain three I2C-bus controllers.
The I2C-bus is bidirectional for inter-IC control using only two wires: a Serial Clock line
(SCL) and a Serial Data Line (SDA). Each device is recognized by a unique address and
can operate as either a receiver-only device (e.g., an LCD driver) or a transmitter with the
capability to both receive and send information (such as memory). Transmitters and/or
receivers can operate in either master or slave mode, depending on whether the chip has
to initiate a data transfer or is only addressed. The I2C is a multi-master bus and can be
controlled by more than one bus master connected to it.
7.19.1 Features
• I2C0 is a standard I2C compliant bus interface with open-drain pins. I2C0 also
supports Fast mode plus with bit rates up to 1 Mbit/s.
•
•
•
•
•
•
I2C1 and I2C2 use standard I/O pins with bit rates of up to 400 kbit/s (Fast I2C-bus).
Easy to configure as master, slave, or master/slave.
Programmable clocks allow versatile rate control.
Bidirectional data transfer between masters and slaves.
Multi-master bus (no central master).
Arbitration between simultaneously transmitting masters without corruption of serial
data on the bus.
• Serial clock synchronization allows devices with different bit rates to communicate via
one serial bus.
• Serial clock synchronization can be used as a handshake mechanism to suspend and
resume serial transfer.
• The I2C-bus can be used for test and diagnostic purposes.
• All I2C-bus controllers support multiple address recognition and a bus monitor mode.
7.20 I2S-bus serial I/O controllers
Remark: The I2S-bus is not available on the LPC1764.
The I2S-bus provides a standard communication interface for digital audio applications.
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The I2S-bus specification defines a 3-wire serial bus using one data line, one clock line,
and one word select signal. The basic I2S-bus connection has one master, which is
always the master, and one slave. The I2S-bus interface on the LPC1768/66/65 provides a
separate transmit and receive channel, each of which can operate as either a master or a
slave.
7.20.1 Features
• The interface has separate input/output channels each of which can operate in master
or slave mode.
• Capable of handling 8-bit, 16-bit, and 32-bit word sizes.
• Mono and stereo audio data supported.
• The sampling frequency can range from 16 kHz to 96 kHz (16, 22.05, 32, 44.1, 48,
96) kHz.
• Support for an audio master clock.
• Configurable word select period in master mode (separately for I2S-bus input and
output).
• Two 8-word FIFO data buffers are provided, one for transmit and one for receive.
• Generates interrupt requests when buffer levels cross a programmable boundary.
• Two DMA requests, controlled by programmable buffer levels. These are connected to
the GPDMA block.
• Controls include reset, stop and mute options separately for I2S-bus input and I2S-bus
output.
7.21 General purpose 32-bit timers/external event counters
The LPC1768/66/65/64 include four 32-bit timer/counters. The timer/counter is designed
to count cycles of the system derived clock or an externally-supplied clock. It can
optionally generate interrupts, generate timed DMA requests, or perform other actions at
specified timer values, based on four match registers. Each timer/counter also includes
two capture inputs to trap the timer value when an input signal transitions, optionally
generating an interrupt.
7.21.1 Features
• A 32-bit timer/counter with a programmable 32-bit prescaler.
• Counter or timer operation.
• Two 32-bit capture channels per timer, that can take a snapshot of the timer value
when an input signal transitions. A capture event may also generate an interrupt.
• Four 32-bit match registers that allow:
– Continuous operation with optional interrupt generation on match.
– Stop timer on match with optional interrupt generation.
– Reset timer on match with optional interrupt generation.
• Up to four external outputs corresponding to match registers, with the following
capabilities:
– Set LOW on match.
– Set HIGH on match.
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– Toggle on match.
– Do nothing on match.
• Up to two match registers can be used to generate timed DMA requests.
7.22 Pulse width modulator
The PWM is based on the standard Timer block and inherits all of its features, although
only the PWM function is pinned out on the LPC1768/66/65/64. The Timer is designed to
count cycles of the system derived clock and optionally switch pins, generate interrupts or
perform other actions when specified timer values occur, based on seven match registers.
The PWM function is in addition to these features, and is based on match register events.
The ability to separately control rising and falling edge locations allows the PWM to be
used for more applications. For instance, multi-phase motor control typically requires three
non-overlapping PWM outputs with individual control of all three pulse widths and
positions.
Two match registers can be used to provide a single edge controlled PWM output. One
match register (PWMMR0) controls the PWM cycle rate, by resetting the count upon
match. The other match register controls the PWM edge position. Additional single edge
controlled PWM outputs require only one match register each, since the repetition rate is
the same for all PWM outputs. Multiple single edge controlled PWM outputs will all have a
rising edge at the beginning of each PWM cycle, when an PWMMR0 match occurs.
Three match registers can be used to provide a PWM output with both edges controlled.
Again, the PWMMR0 match register controls the PWM cycle rate. The other match
registers control the two PWM edge positions. Additional double edge controlled PWM
outputs require only two match registers each, since the repetition rate is the same for all
PWM outputs.
With double edge controlled PWM outputs, specific match registers control the rising and
falling edge of the output. This allows both positive going PWM pulses (when the rising
edge occurs prior to the falling edge), and negative going PWM pulses (when the falling
edge occurs prior to the rising edge).
7.22.1 Features
• One PWM block with Counter or Timer operation (may use the peripheral clock or one
of the capture inputs as the clock source).
• Seven match registers allow up to 6 single edge controlled or 3 double edge
controlled PWM outputs, or a mix of both types. The match registers also allow:
– Continuous operation with optional interrupt generation on match.
– Stop timer on match with optional interrupt generation.
– Reset timer on match with optional interrupt generation.
• Supports single edge controlled and/or double edge controlled PWM outputs. Single
edge controlled PWM outputs all go high at the beginning of each cycle unless the
output is a constant low. Double edge controlled PWM outputs can have either edge
occur at any position within a cycle. This allows for both positive going and negative
going pulses.
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• Pulse period and width can be any number of timer counts. This allows complete
flexibility in the trade-off between resolution and repetition rate. All PWM outputs will
occur at the same repetition rate.
• Double edge controlled PWM outputs can be programmed to be either positive going
or negative going pulses.
• Match register updates are synchronized with pulse outputs to prevent generation of
erroneous pulses. Software must ‘release’ new match values before they can become
effective.
• May be used as a standard 32-bit timer/counter with a programmable 32-bit prescaler
if the PWM mode is not enabled.
7.23 Motor control PWM
The motor control PWM is a specialized PWM supporting 3-phase motors and other
combinations. Feedback inputs are provided to automatically sense rotor position and use
that information to ramp speed up or down. An abort input is also provided that causes the
PWM to immediately release all motor drive outputs. At the same time, the motor control
PWM is highly configurable for other generalized timing, counting, capture, and compare
applications.
7.24 Quadrature Encoder Interface (QEI)
A quadrature encoder, also known as a 2-channel incremental encoder, converts angular
displacement into two pulse signals. By monitoring both the number of pulses and the
relative phase of the two signals, the user can track the position, direction of rotation, and
velocity. In addition, a third channel, or index signal, can be used to reset the position
counter. The quadrature encoder interface decodes the digital pulses from a quadrature
encoder wheel to integrate position over time and determine direction of rotation. In
addition, the QEI can capture the velocity of the encoder wheel.
7.24.1 Features
•
•
•
•
•
•
•
•
•
•
Tracks encoder position.
Increments/decrements depending on direction.
Programmable for 2x or 4x position counting.
Velocity capture using built-in timer.
Velocity compare function with “less than” interrupt.
Uses 32-bit registers for position and velocity.
Three position compare registers with interrupts.
Index counter for revolution counting.
Index compare register with interrupts.
Can combine index and position interrupts to produce an interrupt for whole and
partial revolution displacement.
• Digital filter with programmable delays for encoder input signals.
• Can accept decoded signal inputs (clk and direction).
• Connected to APB.
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7.25 Repetitive Interrupt (RI) timer
The repetitive interrupt timer provides a free-running 32-bit counter which is compared to
a selectable value, generating an interrupt when a match occurs. Any bits of the
timer/compare can be masked such that they do not contribute to the match detection.
The repetitive interrupt timer can be used to create an interrupt that repeats at
predetermined intervals.
7.25.1 Features
• 32-bit counter running from PCLK. Counter can be free-running or be reset by a
generated interrupt.
• 32-bit compare value.
• 32-bit compare mask. An interrupt is generated when the counter value equals the
compare value, after masking. This allows for combinations not possible with a simple
compare.
7.26 System tick timer
The ARM Cortex-M3 includes a system tick timer (SYSTICK) that is intended to generate
a dedicated SYSTICK exception at a 10 ms interval. In the LPC1768/66/65/64, this timer
can be clocked from the internal AHB clock or from a device pin.
7.27 Watchdog timer
The purpose of the watchdog is to reset the microcontroller within a reasonable amount of
time if it enters an erroneous state. When enabled, the watchdog will generate a system
reset if the user program fails to ‘feed’ (or reload) the watchdog within a predetermined
amount of time.
7.27.1 Features
• Internally resets chip if not periodically reloaded.
• Debug mode.
• Enabled by software but requires a hardware reset or a watchdog reset/interrupt to be
disabled.
•
•
•
•
Incorrect/Incomplete feed sequence causes reset/interrupt if enabled.
Flag to indicate watchdog reset.
Programmable 32-bit timer with internal prescaler.
Selectable time period from (Tcy(WDCLK) × 256 × 4) to (Tcy(WDCLK) × 232 × 4) in
multiples of Tcy(WDCLK) × 4.
• The Watchdog Clock (WDCLK) source can be selected from the Internal RC (IRC)
oscillator or the APB peripheral clock. This gives a wide range of potential timing
choices of Watchdog operation under different power reduction conditions. It also
provides the ability to run the WDT from an entirely internal source that is not
dependent on an external crystal and its associated components and wiring for
increased reliability.
• Includes lock/safe feature.
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7.28 RTC and backup registers
The RTC is a set of counters for measuring time when system power is on, and optionally
when it is off. The RTC on the LPC1768/66/65/64 is designed to have extremely low
power consumption, i.e. less than 1 µA. The RTC will typically run from the main chip
power supply, conserving battery power while the rest of the device is powered up. When
operating from a battery, the RTC will continue working down to 2.1 V. Battery power can
be provided from a standard 3 V Lithium button cell.
An ultra-low power 32 kHz oscillator will provide a 1 Hz clock to the time counting portion
of the RTC, moving most of the power consumption out of the time counting function.
The RTC includes a calibration mechanism to allow fine-tuning the count rate in a way that
will provide less than 1 second per day error when operated at a constant voltage and
temperature. A clock output function (see Section 7.29.4) makes measuring the oscillator
rate easy and accurate.
The RTC contains a small set of backup registers (64 bytes) for holding data while the
main part of the LPC1768/66/65/64 is powered off.
The RTC includes an alarm function that can wake up the LPC1768/66/65/64 from all
reduced power modes with a time resolution of 1 s.
7.28.1 Features
• Measures the passage of time to maintain a calendar and clock.
• Ultra low power design to support battery powered systems.
• Provides Seconds, Minutes, Hours, Day of Month, Month, Year, Day of Week, and Day
of Year.
•
•
•
•
Dedicated power supply pin can be connected to a battery or to the main 3.3 V.
Periodic interrupts can be generated from increments of any field of the time registers.
Backup registers (64 bytes) powered by VBAT.
RTC power supply is isolated from the rest of the chip.
7.29 Clocking and power control
7.29.1 Crystal oscillators
The LPC1768/66/65/64 include three independent oscillators. These are the main
oscillator, the IRC oscillator, and the RTC oscillator. Each oscillator can be used for more
than one purpose as required in a particular application. Any of the three clock sources
can be chosen by software to drive the main PLL and ultimately the CPU.
Following reset, the LPC1768/66/65/64 will operate from the Internal RC oscillator until
switched by software. This allows systems to operate without any external crystal and the
bootloader code to operate at a known frequency.
See Figure 4 for an overview of the LPC1768/66/65/64 clock generation.
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LPC17xx
usbclk
(48 MHz)
USB PLL
MAIN
OSCILLATOR
USB
CLOCK
DIVIDER
MAIN PLL
pllclk
system
clock
select
(CLKSRCSEL)
INTERNAL
RC
OSCILLATOR
USB BLOCK
USB clock config USB PLL enable
(USBCLKCFG)
cclk
CPU
CLOCK
DIVIDER
main PLL enable
CPU clock config
(CCLKCFG)
ARM
CORTEX-M3
ETHERNET
BLOCK
DMA
GPIO
NVIC
WATCHDOG
TIMER
CCLK/8
32 kHz
RTC
OSCILLATOR
PERIPHERAL
CLOCK
GENERATOR
pclkWDT
rtclk = 1Hz
REAL-TIME
CLOCK
CCLK/6
CCLK/4
CCLK/2
APB peripherals
CCLK
002aad947
Fig 4.
LPC1768/66/65/64 clocking generation block diagram
7.29.1.1
Internal RC oscillator
The IRC may be used as the clock source for the WDT, and/or as the clock that drives the
PLL and subsequently the CPU. The nominal IRC frequency is 4 MHz. The IRC is
trimmed to 1 % accuracy over the entire voltage and temperature range.
Upon power-up or any chip reset, the LPC1768/66/65/64 use the IRC as the clock source.
Software may later switch to one of the other available clock sources.
7.29.1.2
Main oscillator
The main oscillator can be used as the clock source for the CPU, with or without using the
PLL. The main oscillator also provides the clock source for the dedicated USB PLL.
The main oscillator operates at frequencies of 1 MHz to 25 MHz. This frequency can be
boosted to a higher frequency, up to the maximum CPU operating frequency, by the main
PLL. The clock selected as the PLL input is PLLCLKIN. The ARM processor clock
frequency is referred to as CCLK elsewhere in this document. The frequencies of
PLLCLKIN and CCLK are the same value unless the PLL is active and connected. The
clock frequency for each peripheral can be selected individually and is referred to as
PCLK. Refer to Section 7.29.2 for additional information.
7.29.1.3
RTC oscillator
The RTC oscillator can be used as the clock source for the RTC block, the main PLL,
and/or the CPU.
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7.29.2 Main PLL (PLL0)
The PLL0 accepts an input clock frequency in the range of 32 kHz to 25 MHz. The input
frequency is multiplied up to a high frequency, then divided down to provide the actual
clock used by the CPU and/or the USB block.
The PLL0 input, in the range of 32 kHz to 25 MHz, may initially be divided down by a value
‘N’, which may be in the range of 1 to 256. This input division provides a wide range of
output frequencies from the same input frequency.
Following the PLL0 input divider is the PLL0 multiplier. This can multiply the input divider
output through the use of a Current Controlled Oscillator (CCO) by a value ‘M’, in the
range of 1 through 32768. The resulting frequency must be in the range of 275 MHz to
550 MHz. The multiplier works by dividing the CCO output by the value of M, then using a
phase-frequency detector to compare the divided CCO output to the multiplier input. The
error value is used to adjust the CCO frequency.
The PLL0 is turned off and bypassed following a chip Reset and by entering Power-down
mode. PLL0 is enabled by software only. The program must configure and activate the
PLL0, wait for the PLL0 to lock, and then connect to the PLL0 as a clock source.
7.29.3 USB PLL (PLL1)
The LPC1768/66/65/64 contain a second, dedicated USB PLL1 to provide clocking for the
USB interface.
The PLL1 receives its clock input from the main oscillator only and provides a fixed
48 MHz clock to the USB block only. The PLL1 is disabled and powered off on reset. If the
PLL1 is left disabled, the USB clock will be supplied by the 48 MHz clock from the main
PLL0.
The PLL1 accepts an input clock frequency in the range of 10 MHz to 25 MHz only. The
input frequency is multiplied up the range of 48 MHz for the USB clock using a Current
Controlled Oscillators (CCO). It is insured that the PLL1 output has a 50% duty cycle.
7.29.4 RTC clock output
The LPC1768/66/65/64 feature a clock output function intended for synchronizing with
external devices and for use during system development to allow checking the internal
clocks CCLK, IRC clock, main crystal, RTC clock, and USB clock in the outside world. The
RTC clock output allows tuning the RTC frequency without probing the pin, which would
distort the results.
7.29.5 Wake-up timer
The LPC1768/66/65/64 begin operation at power-up and when awakened from
Power-down mode by using the 4 MHz IRC oscillator as the clock source. This allows chip
operation to resume quickly. If the main oscillator or the PLL is needed by the application,
software will need to enable these features and wait for them to stabilize before they are
used as a clock source.
When the main oscillator is initially activated, the wake-up timer allows software to ensure
that the main oscillator is fully functional before the processor uses it as a clock source
and starts to execute instructions. This is important at power on, all types of Reset, and
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whenever any of the aforementioned functions are turned off for any reason. Since the
oscillator and other functions are turned off during Power-down mode, any wake-up of the
processor from Power-down mode makes use of the wake-up Timer.
The Wake-up Timer monitors the crystal oscillator to check whether it is safe to begin
code execution. When power is applied to the chip, or when some event caused the chip
to exit Power-down mode, some time is required for the oscillator to produce a signal of
sufficient amplitude to drive the clock logic. The amount of time depends on many factors,
including the rate of VDD(3V3) ramp (in the case of power on), the type of crystal and its
electrical characteristics (if a quartz crystal is used), as well as any other external circuitry
(e.g., capacitors), and the characteristics of the oscillator itself under the existing ambient
conditions.
7.29.6 Power control
The LPC1768/66/65/64 support a variety of power control features. There are four special
modes of processor power reduction: Sleep mode, Deep-sleep mode, Power-down mode,
and Deep power-down mode. The CPU clock rate may also be controlled as needed by
changing clock sources, reconfiguring PLL values, and/or altering the CPU clock divider
value. This allows a trade-off of power versus processing speed based on application
requirements. In addition, Peripheral Power Control allows shutting down the clocks to
individual on-chip peripherals, allowing fine tuning of power consumption by eliminating all
dynamic power use in any peripherals that are not required for the application. Each of the
peripherals has its own clock divider which provides even better power control.
Integrated PMU (Power Management Unit) automatically adjust internal regulators to
minimize power consumption during Sleep, Deep sleep, Power-down, and Deep
power-down modes.
The LPC1768/66/65/64 also implement a separate power domain to allow turning off
power to the bulk of the device while maintaining operation of the RTC and a small set of
registers for storing data during any of the power-down modes.
7.29.6.1
Sleep mode
When Sleep mode is entered, the clock to the core is stopped. Resumption from the Sleep
mode does not need any special sequence but re-enabling the clock to the ARM core.
In Sleep mode, execution of instructions is suspended until either a Reset or interrupt
occurs. Peripheral functions continue operation during Sleep mode and may generate
interrupts to cause the processor to resume execution. Sleep mode eliminates dynamic
power used by the processor itself, memory systems and related controllers, and internal
buses.
7.29.6.2
Deep-sleep mode
In Deep-sleep mode, the oscillator is shut down and the chip receives no internal clocks.
The processor state and registers, peripheral registers, and internal SRAM values are
preserved throughout Deep-sleep mode and the logic levels of chip pins remain static.
The output of the IRC is disabled but the IRC is not powered down for a fast wake-up later.
The RTC oscillator is not stopped because the RTC interrupts may be used as the
wake-up source. The PLL is automatically turned off and disconnected. The CCLK and
USB clock dividers automatically get reset to zero.
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The Deep-sleep mode can be terminated and normal operation resumed by either a
Reset or certain specific interrupts that are able to function without clocks. Since all
dynamic operation of the chip is suspended, Deep-sleep mode reduces chip power
consumption to a very low value. Power to the flash memory is left on in Deep-sleep
mode, allowing a very quick wake-up.
On wake-up from Deep-sleep mode, the code execution and peripherals activities will
resume after 4 cycles expire if the IRC was used before entering Deep-sleep mode. If the
main external oscillator was used, the code execution will resume when 4096 cycles
expire. PLL and clock dividers need to be reconfigured accordingly.
7.29.6.3
Power-down mode
Power-down mode does everything that Deep-sleep mode does, but also turns off the
power to the IRC oscillator and the flash memory. This saves more power but requires
waiting for resumption of flash operation before execution of code or data access in the
flash memory can be accomplished.
On the wake-up of Power-down mode, if the IRC was used before entering Power-down
mode, it will take IRC 60 µs to start-up. After this 4 IRC cycles will expire before the code
execution can then be resumed if the code was running from SRAM. In the meantime, the
flash wake-up timer then counts 4 MHz IRC clock cycles to make the 100 µs flash start-up
time. When it times out, access to the flash will be allowed. Users need to reconfigure the
PLL and clock dividers accordingly.
7.29.6.4
Deep power-down mode
The Deep power-down mode can only be entered from the RTC block. In Deep
power-down mode, power is shut off to the entire chip with the exception of the RTC
module and the RESET pin.
The LPC1768/66/65/64 can wake up from Deep power-down mode via the RESET pin or
an alarm match event of the RTC.
7.29.6.5
Wakeup interrupt controller
The Wakeup Interrupt Controller (WIC) allows the CPU to automatically wake up from any
enabled priority interrupt that can occur while the clocks are stopped in Deep sleep,
Power-down, and Deep power-down modes.
The WIC works in connection with the Nested Vectored Interrupt Controller (NVIC). When
the CPU enters Deep sleep, Power-down, or Deep power-down mode, the NVIC sends a
mask of the current interrupt situation to the WIC.This mask includes all of the interrupts
that are both enabled and of sufficient priority to be serviced immediately. With this
information, the WIC simply notices when one of the interrupts has occurred and then it
wakes up the CPU.
The WIC eliminates the need to periodically wake up the CPU and poll the interrupts
resulting in additional power savings.
7.29.7 Peripheral power control
A Power Control for Peripherals feature allows individual peripherals to be turned off if
they are not needed in the application, resulting in additional power savings.
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7.29.8 Power domains
The LPC1768/66/65/64 provide two independent power domains that allow the bulk of the
device to have power removed while maintaining operation of the RTC and the backup
Registers.
On the LPC1768/66/65/64, I/O pads are powered by the 3.3 V (VDD(3V3)) pins, while the
VDD(REG)(3V3) pin powers the on-chip voltage regulator which in turn provides power to the
CPU and most of the peripherals.
Depending on the LPC1768/66/65/64 application, a design can use two power options to
manage power consumption.
The first option assumes that power consumption is not a concern and the design ties the
VDD(3V3) and VDD(REG)(3V3) pins together. This approach requires only one 3.3 V power
supply for both pads, the CPU, and peripherals. While this solution is simple, it does not
support powering down the I/O pad ring “on the fly” while keeping the CPU and
peripherals alive.
The second option uses two power supplies; a 3.3 V supply for the I/O pads (VDD(3V3)) and
a dedicated 3.3 V supply for the CPU (VDD(REG)(3V3)). Having the on-chip voltage regulator
powered independently from the I/O pad ring enables shutting down of the I/O pad power
supply “on the fly”, while the CPU and peripherals stay active.
The VBAT pin supplies power only to the RTC domain. The RTC requires a minimum of
power to operate, which can be supplied by an external battery. The device core power
(VDD(REG)(3V3)) is used to operate the RTC whenever VDD(REG)(3V3) is present. Therefore,
there is no power drain from the RTC battery when VDD(REG)(3V3) is available.
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LPC17xx
VDD(3V3)
to I/O pads
to core
VSS
3.3 V REGULATOR
to memories,
peripherals,
oscillators,
PLLs
VDD(REG)(3V3)
MAIN POWER DOMAIN
VBAT
POWER
SELECTOR
ULTRA-LOW
POWER
REGULATOR
BACKUP REGISTERS
RTCX1
RTCX2
32 kHz
OSCILLATOR
REAL-TIME CLOCK
RTC POWER DOMAIN
DAC
VDDA
VREFP
ADC
VREFN
VSSA
ADC POWER DOMAIN
002aad978
Fig 5.
Power distribution
7.30 System control
7.30.1 Reset
Reset has four sources on the LPC1768/66/65/64: the RESET pin, the Watchdog reset,
power-on reset (POR), and the BrownOut Detection (BOD) circuit. The RESET pin is a
Schmitt trigger input pin. Assertion of chip Reset by any source, once the operating
voltage attains a usable level, starts the Wake-up timer (see description in
Section 7.29.5), causing reset to remain asserted until the external Reset is de-asserted,
the oscillator is running, a fixed number of clocks have passed, and the flash controller
has completed its initialization.
When the internal Reset is removed, the processor begins executing at address 0, which
is initially the Reset vector mapped from the Boot Block. At that point, all of the processor
and peripheral registers have been initialized to predetermined values.
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7.30.2 Brownout detection
The LPC1768/66/65/64 include 2-stage monitoring of the voltage on the VDD(REG)(3V3)
pins. If this voltage falls below 2.95 V, the BOD asserts an interrupt signal to the Vectored
Interrupt Controller. This signal can be enabled for interrupt in the Interrupt Enable
Register in the NVIC in order to cause a CPU interrupt; if not, software can monitor the
signal by reading a dedicated status register.
The second stage of low-voltage detection asserts reset to inactivate the
LPC1768/66/65/64 when the voltage on the VDD(REG)(3V3) pins falls below 2.65 V. This
reset prevents alteration of the flash as operation of the various elements of the chip
would otherwise become unreliable due to low voltage. The BOD circuit maintains this
reset down below 1 V, at which point the power-on reset circuitry maintains the overall
reset.
Both the 2.95 V and 2.65 V thresholds include some hysteresis. In normal operation, this
hysteresis allows the 2.95 V detection to reliably interrupt, or a regularly executed event
loop to sense the condition.
7.30.3 Code security (Code Read Protection - CRP)
This feature of the LPC1768/66/65/64 allows user to enable different levels of security in
the system so that access to the on-chip flash and use of the JTAG and ISP can be
restricted. When needed, CRP is invoked by programming a specific pattern into a
dedicated flash location. IAP commands are not affected by the CRP.
There are three levels of the Code Read Protection.
CRP1 disables access to chip via the JTAG and allows partial flash update (excluding
flash sector 0) using a limited set of the ISP commands. This mode is useful when CRP is
required and flash field updates are needed but all sectors can not be erased.
CRP2 disables access to chip via the JTAG and only allows full flash erase and update
using a reduced set of the ISP commands.
Running an application with level CRP3 selected fully disables any access to chip via the
JTAG pins and the ISP. This mode effectively disables ISP override using P2[10] pin, too. It
is up to the user’s application to provide (if needed) flash update mechanism using IAP
calls or call reinvoke ISP command to enable flash update via UART0.
CAUTION
If level three Code Read Protection (CRP3) is selected, no future factory testing can be
performed on the device.
7.30.4 APB interface
The APB peripherals are split into two separate APB buses in order to distribute the bus
bandwidth and thereby reducing stalls caused by contention between the CPU and the
GPDMA controller.
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7.30.5 AHB multilayer matrix
The LPC1768/66/65/64 use an AHB multilayer matrix. This matrix connects the instruction
(I-code) and data (D-code) CPU buses of the ARM Cortex-M3 to the flash memory, the
main (32KB) static RAM, and the Boot ROM. The GPDMA can also access all of these
memories. The peripheral DMA controllers, Ethernet (LPC1768/66/64 only) and USB, can
access all SRAM blocks. Additionally, the matrix connects the CPU system bus and all of
the DMA controllers to the various peripheral functions.
7.30.6 External interrupt inputs
The LPC1768/66/65/64 include up to 46 edge sensitive interrupt inputs combined with up
to four level sensitive external interrupt inputs as selectable pin functions. The external
interrupt inputs can optionally be used to wake up the processor from Power-down mode.
7.30.7 Memory mapping control
The Cortex-M3 incorporates a mechanism that allows remapping the interrupt vector table
to alternate locations in the memory map. This is controlled via the Vector Table Offset
Register contained in the NVIC.
The vector table may be located anywhere within the bottom 1 GB of Cortex-M3 address
space. The vector table must be located on a 128 word (512 byte) boundary because the
NVIC on the LPC1768/66/65/64 is configured for 128 total interrupts.
7.31 Emulation and debugging
Debug and trace functions are integrated into the ARM Cortex-M3. Serial wire debug and
trace functions are supported in addition to a standard JTAG debug and parallel trace
functions. The ARM Cortex-M3 is configured to support up to eight breakpoints and four
watch points.
8. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).[1]
Symbol
Parameter
Conditions
Min
Max
Unit
VDD(3V3)
supply voltage (3.3 V)
core and external
rail
2.4
3.6
V
VDD(REG)(3V3)
regulator supply voltage (3.3 V)
2.4
3.6
V
VDDA
analog 3.3 V pad supply voltage
−0.5
+4.6
V
Vi(VBAT)
input voltage on pin VBAT
for the RTC
−0.5
+4.6
V
Vi(VREFP)
input voltage on pin VREFP
−0.5
+4.6
V
VIA
analog input voltage
on ADC related
pins
−0.5
+5.1
V
VI
input voltage
5 V tolerant I/O
pins; only valid
when the VDD(3V3)
supply voltage is
present
[2]
−0.5
+6.0
V
[2][3]
−0.5
VDD(3V3) +
0.5
V
other I/O pins
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Table 4.
Limiting values …continued
In accordance with the Absolute Maximum Rating System (IEC 60134).[1]
Symbol
IDD
Parameter
Conditions
supply current
Min
Max
Unit
per supply pin
[4]
-
100
mA
[4]
-
100
mA
-
100
mA
ISS
ground current
per ground pin
Ilatch
I/O latch-up current
−(0.5VDD(3V3)) < VI
< (1.5VDD(3V3));
Tj < 125 °C
[5]
Tstg
storage temperature
Ptot(pack)
total power dissipation (per package)
based on package
heat transfer, not
device power
consumption
Vesd
electrostatic discharge voltage
human body
model; all pins
[6]
−65
+150
°C
-
1.5
W
−2000
+2000
V
[1]
The following applies to the limiting values:
a) This product includes circuitry specifically designed for the protection of its internal devices from the damaging effects of excessive
static charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying greater than the rated maximum.
b) Parameters are valid over operating temperature range unless otherwise specified. All voltages are with respect to VSS unless
otherwise noted.
[2]
Including voltage on outputs in 3-state mode.
[3]
Not to exceed 4.6 V.
[4]
The peak current is limited to 25 times the corresponding maximum current.
[5]
Dependent on package type.
[6]
Human body model: equivalent to discharging a 100 pF capacitor through a 1.5 kΩ series resistor.
9. Thermal characteristics
9.1 Thermal characteristics
The average chip junction temperature, Tj (°C), can be calculated using the following
equation:
T j = T amb + ( P D × R th ( j – a ) )
(1)
• Tamb = ambient temperature (°C),
• Rth(j-a) = the package junction-to-ambient thermal resistance (°C/W)
• PD = sum of internal and I/O power dissipation
The internal power dissipation is the product of IDD and VDD. The I/O power dissipation of
the I/O pins is often small and many times can be negligible. However it can be significant
in some applications.
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Table 5.
Thermal characteristics
VDD = 2.4 V to 3.6 V; Tamb = −40 °C to +85 °C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Rth(j-a)
thermal resistance from
junction to ambient
LQFP100 package
-
<tbd>
-
°C/W
Tj(max)
maximum junction
temperature
-
-
150
°C
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10. Static characteristics
Table 6.
Static characteristics
Tamb = −40 °C to +85 °C unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ[1]
Max
Unit
VDD(3V3)
supply voltage (3.3 V)
core and external rail
2.4
3.3
3.6
V
VDD(REG)(3V3)
regulator supply voltage
(3.3 V)
2.4
3.3
3.6
V
VDDA
analog 3.3 V pad supply
voltage
2.7
3.3
3.6
V
Vi(VBAT)
input voltage on pin
VBAT
2.1
3.3
3.6
V
Vi(VREFP)
input voltage on pin
VREFP
2.7
3.3
VDDA
V
[2]
Standard port pins, RESET, RTCK
IIL
LOW-level input current VI = 0 V; on-chip pull-up
resistor disabled
-
-
3
µA
IIH
HIGH-level input current VI = VDD(3V3); on-chip
pull-down resistor
disabled
-
-
3
µA
IOZ
OFF-state output
current
VO = 0 V; VO = VDD(3V3);
on-chip pull-up/down
resistors disabled
-
-
3
µA
VI
input voltage
pin configured to provide
a digital function
0
-
5.5
V
VO
output voltage
output active
0
-
VDD(3V3)
V
VIH
HIGH-level input
voltage
2.0
-
-
V
VIL
LOW-level input voltage
-
-
0.8
V
Vhys
hysteresis voltage
[3][4][5]
-
0.4
-
V
VDD(3V3) −
0.4
-
-
V
VOH
HIGH-level output
voltage
IOH = −4 mA
[6]
VOL
LOW-level output
voltage
IOL = 4 mA
[6]
-
-
0.4
V
IOH
HIGH-level output
current
VOH = VDD(3V3) − 0.4 V
[6]
−4
-
-
mA
IOL
LOW-level output
current
VOL = 0.4 V
[6]
4
-
-
mA
IOHS
HIGH-level short-circuit VOH = 0 V
output current
[7]
-
-
−45
mA
IOLS
LOW-level short-circuit
output current
VOL = VDDA
[7]
-
-
50
mA
Ipd
pull-down current
VI = 5 V
10
50
150
µA
Ipu
pull-up current
VI = 0 V
−15
−50
−85
µA
VDD(3V3) < VI < 5 V
0
0
0
µA
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Table 6.
Static characteristics …continued
Tamb = −40 °C to +85 °C unless otherwise specified.
Min
Typ[1]
Max
Unit
CCLK = 10 MHz
-
<tbd>
-
mA
CCLK = 100 MHz
-
<tbd>
-
mA
sleep mode;
VDD(REG)(3V3) = 3.3 V;
Tamb = 25 °C
-
<tbd>
-
µA
deep sleep mode;
VDD(REG)(3V3) = 3.3 V;
Tamb = 25 °C
-
<tbd>
-
µA
power-down mode;
VDD(REG)(3V3) = 3.3 V;
Tamb = 25 °C
-
<tbd>
-
µA
deep power-down mode;
VDD(REG)(3V3) = 3.3 V;
Tamb = 25 °C
-
<tbd>
-
µA
0.8
-
µA
< 0.8
-
µA
V
Symbol
Parameter
Conditions
IDD(REG)(3V3)
regulator supply current active mode;
(3.3 V)
VDD(REG)(3V3) = 3.3 V;
Tamb = 25 °C; code
while(1){}
executed from flash; all
peripherals enabled
active mode battery
supply current
IBATact
I2C-bus
RTC running;
VDD(REG)(3V3) present
[8]
-
RTC running;
VDD(REG)(3V3) not present
[8]
-
pins (P0[27] and P0[28])
VIH
HIGH-level input
voltage
0.7VDD(3V3) -
-
VIL
LOW-level input voltage
-
-
0.3VDD(3V3) V
Vhys
hysteresis voltage
VOL
LOW-level output
voltage
IOLS = 3 mA
[6]
ILI
input leakage current
VI = VDD(3V3)
[9]
VI = 5 V
-
0.5VDD(3V3) -
V
-
-
0.4
V
-
2
4
µA
-
10
22
µA
Oscillator pins
Vi(XTAL1)
input voltage on pin
XTAL1
0
-
1.8
V
Vo(XTAL2)
output voltage on pin
XTAL2
0
-
1.8
V
Vi(RTCX1)
input voltage on pin
RTCX1
0
-
1.8
V
Vo(RTCX2)
output voltage on pin
RTCX2
0
-
1.8
V
LPC1768_66_65_64_2
Objective data sheet
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Rev. 02 — 11 February 2009
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LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
Table 6.
Static characteristics …continued
Tamb = −40 °C to +85 °C unless otherwise specified.
Parameter
Conditions
Min
Typ[1]
Max
Unit
IOZ
OFF-state output
current
0 V < VI < 3.3 V
-
-
±10
µA
VBUS
bus supply voltage
-
-
5.25
V
VDI
differential input
sensitivity voltage
|(D+) − (D−)|
0.2
-
-
V
VCM
differential common
mode voltage range
includes VDI range
0.8
-
2.5
V
Vth(rs)se
single-ended receiver
switching threshold
voltage
0.8
-
2.0
V
VOL
LOW-level output
voltage for
low-/full-speed
RL of 1.5 kΩ to 3.6 V
-
-
0.18
V
VOH
HIGH-level output
voltage (driven) for
low-/full-speed
RL of 15 kΩ to GND
2.8
-
3.5
V
Ctrans
transceiver capacitance pin to GND
-
-
20
pF
ZDRV
with 33 Ω series resistor;
driver output
steady state drive
impedance for driver
which is not high-speed
capable
36
-
44.1
Ω
Rpu
pull-up resistance
1.1
-
1.9
kΩ
Symbol
USB pins
[10]
SoftConnect = ON
[1]
Typical ratings are not guaranteed. The values listed are at room temperature (25 °C), nominal supply voltages.
[2]
The RTC typically fails when Vi(VBAT) drops below 1.6 V.
[3]
Including voltage on outputs in 3-state mode.
[4]
VDD(3V3) supply voltages must be present.
[5]
3-state outputs go into 3-state mode when VDD(3V3) is grounded.
[6]
Accounts for 100 mV voltage drop in all supply lines.
[7]
Allowed as long as the current limit does not exceed the maximum current allowed by the device.
[8]
On pin VBAT.
[9]
To VSS.
[10] Includes external resistors of 18 Ω ± 1 % on D+ and D−.
LPC1768_66_65_64_2
Objective data sheet
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Rev. 02 — 11 February 2009
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LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
10.1 Power consumption
001aac984
X
X
(X)
X
X
<tbd>
X
X
X
X
X
X
X
X
X (X)
Conditions: Tamb = 25 °C; active mode entered executing code from flash; core voltage 2.7 V; all
peripherals enabled but not configured to run.
Fig 6.
Regulator supply current at different core frequencies in active mode
001aac984
X
X
(X)
X
X
<tbd>
X
X
X
X
X
X
X
X
X (X)
Conditions: Tamb = 25 °C; active mode entered executing code from flash; all peripherals enabled
but not configured to run.
Fig 7.
Regulator supply current at different core voltages in active mode
LPC1768_66_65_64_2
Objective data sheet
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Rev. 02 — 11 February 2009
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LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
001aac984
X
X
(X)
X
X
<tbd>
X
X
X
X
X
X
X
X
X (X)
Conditions: active mode entered executing code from flash; core voltage 2.7 V; all peripherals
enabled but not configured to run.
Fig 8.
Regulator supply current at different temperatures in active mode
001aac984
X
X
(X)
X
X
<tbd>
X
X
X
X
X
X
X
X
X (X)
Conditions: active mode entered executing code from flash; Tamb = 25 °C; RTC running;
Fig 9.
Battery supply current for different core voltages in active mode
Table 7.
Typical peripheral current consumption
Core voltage 3.3 V; Tamb = 25 °C; all measurements in µA; PCLK = CCLK⁄8; all peripherals enabled.
Peripheral
CCLK = 10 MHz
CCLK = 100 MHz
active mode
sleep mode
active mode sleep mode
Timer0
<tbd>
<tbd>
<tbd>
<tbd>
Timer1
<tbd>
<tbd>
<tbd>
<tbd>
Timer2
<tbd>
<tbd>
<tbd>
<tbd>
Timer3
<tbd>
<tbd>
<tbd>
<tbd>
LPC1768_66_65_64_2
Objective data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 11 February 2009
44 of 72
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
Table 7.
Typical peripheral current consumption …continued
Core voltage 3.3 V; Tamb = 25 °C; all measurements in µA; PCLK = CCLK⁄8; all peripherals enabled.
Peripheral
CCLK = 10 MHz
CCLK = 100 MHz
active mode
sleep mode
active mode sleep mode
RIT
<tbd>
<tbd>
<tbd>
<tbd>
UART0
<tbd>
<tbd>
<tbd>
<tbd>
UART1
<tbd>
<tbd>
<tbd>
<tbd>
UART2
<tbd>
<tbd>
<tbd>
<tbd>
UART3
<tbd>
<tbd>
<tbd>
<tbd>
PWM1
<tbd>
<tbd>
<tbd>
<tbd>
Motor control PWM
<tbd>
<tbd>
<tbd>
<tbd>
Quadrature encoder
<tbd>
<tbd>
<tbd>
<tbd>
I2C0-bus
<tbd>
<tbd>
<tbd>
<tbd>
I2C1-bus
<tbd>
<tbd>
<tbd>
<tbd>
I2C2-bus
<tbd>
<tbd>
<tbd>
<tbd>
(LPC1768/66/65 only) <tbd>
<tbd>
<tbd>
<tbd>
SPI
<tbd>
<tbd>
<tbd>
<tbd>
SSP0
<tbd>
<tbd>
<tbd>
<tbd>
SSP1
<tbd>
<tbd>
<tbd>
<tbd>
CAN1
<tbd>
<tbd>
<tbd>
<tbd>
CAN2
<tbd>
<tbd>
<tbd>
<tbd>
ADC
<tbd>
<tbd>
<tbd>
<tbd>
DAC (LPC1768/66/65 only)
<tbd>
<tbd>
<tbd>
<tbd>
USB
<tbd>
<tbd>
<tbd>
<tbd>
Ethernet (LPC1768/66/64 only)
<tbd>
<tbd>
<tbd>
<tbd>
GPDMA controller
<tbd>
<tbd>
<tbd>
<tbd>
I2S-interface
Table 8.
Typical RTC power consumption
Vi(VBAT) = 3.3 V; Tamb = 25 °C; all measurements in µA; RTC clock = 1 Hz; VDD(REG)(3V3) not present.
Power modes
IBAT in µA
active
sleep
deep-sleep
power-down
deep
power-down
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
LPC1768_66_65_64_2
Objective data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 11 February 2009
45 of 72
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
10.2 Electrical pin characteristics
001aac984
X
X
(X)
X
X
<tbd>
X
X
X
X
X
X
X
X
X (X)
Measured on pins Pn.m; VDD(3V3) = x.x V.
Fig 10. Typical LOW-level output IOL current versus LOW-level output VOL
001aac984
X
X
(X)
X
X
<tbd>
X
X
X
X
X
X
X
X
X (X)
Measured on pins Pn.m; VDD(3V3) = x.x V.
Fig 11. Typical HIGH-level output IOH current versus HIGH-level output voltage VOH
LPC1768_66_65_64_2
Objective data sheet
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Rev. 02 — 11 February 2009
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LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
001aac984
X
X
(X)
X
X
<tbd>
X
X
X
X
X
X
X
X
X (X)
Measured on pins Pn.m; VDD(3V3) = x.x V.
Fig 12. Typical pull-up current Ipu versus input voltage Vi
001aac984
X
X
(X)
X
X
<tbd>
X
X
X
X
X
X
X
X
X (X)
Measured on pins Pn.m; VDD(3V3) = x.x V.
Fig 13. Typical pull-down current Ipd versus input voltage Vi
LPC1768_66_65_64_2
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LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
11. Dynamic characteristics
11.1 Flash memory
Table 9.
Flash characteristics
Tamb = −40 °C to +85 °C unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Nendu
endurance
−40 °C to +85 °C
10000
100000
-
cycles
−25 °C to +85 °C
100000
-
-
cycles
powered; <100 cycles;
−40 °C to +85 °C
10
-
-
years
retention time
tret
Max
Unit
11.2 External clock
Table 10. Dynamic characteristic: external clock
Tamb = −40 °C to +85 °C; VDD(3V3) over specified ranges.[1]
Min
Typ[2]
Max
Unit
oscillator frequency
1
-
25
MHz
Tcy(clk)
clock cycle time
42
-
1000
ns
tCHCX
clock HIGH time
Tcy(clk) × 0.4
-
-
ns
tCLCX
clock LOW time
Tcy(clk) × 0.4
-
-
ns
tCLCH
clock rise time
-
-
5
ns
tCHCL
clock fall time
-
-
5
ns
Symbol
Parameter
fosc
Conditions
[1]
Parameters are valid over operating temperature range unless otherwise specified.
[2]
Typical ratings are not guaranteed. The values listed are at room temperature (25 °C), nominal supply voltages.
tCHCL
tCHCX
tCLCH
tCLCX
Tcy(clk)
002aaa907
Fig 14. External clock timing (with an amplitude of at least Vi(RMS) = 200 mV)
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LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
11.3 Internal oscillators
Table 11. Dynamic characteristic: internal oscillators
Tamb = −40 °C to +85 °C; VDD(3V3) over specified ranges.[1]
Symbol
Parameter
Conditions
Min
Typ[2]
Max
Unit
fosc(RC)
internal RC oscillator frequency
-
<tbd>
<tbd>
<tbd>
MHz
fi(RTC)
RTC input frequency
-
<tbd>
<tbd>
<tbd>
MHz
[1]
Parameters are valid over operating temperature range unless otherwise specified.
[2]
Typical ratings are not guaranteed. The values listed are at room temperature (25 °C), nominal supply voltages.
001aac984
X
X
(X)
X
X
<tbd>
X
X
X
X
X
X
X
X
X (X)
Conditions: <tbd>.
Fig 15. Internal RC oscillator frequency vs. temperature
001aac984
X
X
(X)
X
X
<tbd>
X
X
X
X
X
X
X
X
X (X)
Conditions: <tbd>.
Fig 16. Internal RC oscillator frequency vs. core voltage
LPC1768_66_65_64_2
Objective data sheet
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Rev. 02 — 11 February 2009
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LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
11.4 I2C-bus
Table 12. Dynamic characteristic: I2C-bus pins
Tamb = −40 °C to +85 °C; VDD(3V3) over specified ranges.[1]
Symbol
I2C-bus
Parameter
Conditions
Min
Typ[2]
VIH to VIL
20 + 0.1 × Cb[3]
Max
Unit
pins (P0[27] and P0[28])
tf(o)
output fall time
-
-
ns
tr
rise time
<tbd>
<tbd>
<tbd>
ns
tf
fall time
<tbd>
<tbd>
<tbd>
ns
tBUF
bus free time between a STOP and
START condition
<tbd>
<tbd>
<tbd>
ns
tLOW
LOW period of the SCL clock
<tbd>
<tbd>
<tbd>
ns
tHD;STA
hold time (repeated) START
condition
<tbd>
<tbd>
<tbd>
ns
tHIGH
HIGH period of the SCL clock
<tbd>
<tbd>
<tbd>
ns
tSU;DAT
data set-up time
<tbd>
<tbd>
<tbd>
ns
tSU;STA
set-up time for a repeated START
condition
<tbd>
<tbd>
<tbd>
ns
tSU;STO
set-up time for STOP condition
<tbd>
<tbd>
<tbd>
ns
[1]
Parameters are valid over operating temperature range unless otherwise specified.
[2]
Typical ratings are not guaranteed. The values listed are at room temperature (25 °C), nominal supply voltages.
[3]
Bus capacitance Cb in pF, from 10 pF to 400 pF.
SDA
tBUF
tLOW
tr
tf
tHD;STA
SCL
P
S
tHD;STA
P
S
tHD;STA
tHIGH
tSU;DAT
tSU;STA
tSU;STO
002aad985
Fig 17. I2C-bus pins clock timing
LPC1768_66_65_64_2
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LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
11.5 SSP interface
Table 13. Dynamic characteristic: SSP interface
Tamb = −40 °C to +85 °C; VDD(3V3) over specified ranges.[1]
Symbol
Parameter
Conditions
Min
Typ[2]
Max
Unit
SPI_MISO set-up time
Tamb = 25 °C; measured in SPI
Master mode; see Figure 18
-
11
-
ns
SSP interface
tsu(SPI_MISO)
[1]
Parameters are valid over operating temperature range unless otherwise specified.
[2]
Typical ratings are not guaranteed. The values listed are at room temperature (25 °C), nominal supply voltages.
shifting edges
SCK
sampling edges
MOSI
MISO
tsu(SPI_MISO)
002aad326
Fig 18. MISO line set-up time in SSP Master mode
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NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
11.6 USB interface
Table 14. Dynamic characteristics: USB pins (full-speed)
CL = 50 pF; Rpu = 1.5 kΩ on D+ to VDD(3V3); unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
tr
rise time
10 % to 90 %
8.5
-
13.8
ns
tf
fall time
10 % to 90 %
7.7
-
13.7
ns
tFRFM
differential rise and fall time matching
tr / tf
-
-
109
%
VCRS
output signal crossover voltage
1.3
-
2.0
V
tFEOPT
source SE0 interval of EOP
160
-
175
ns
tFDEOP
source jitter for differential transition to SE0 see Figure 19
transition
−2
-
+5
ns
tJR1
receiver jitter to next transition
−18.5
-
+18.5
ns
tJR2
receiver jitter for paired transitions
see Figure 19
10 % to 90 %
tEOPR1
EOP width at receiver
must reject as EOP; see
Figure 19
[1]
tEOPR2
EOP width at receiver
must accept as EOP;
see Figure 19
[1]
[1]
−9
-
+9
ns
40
-
-
ns
82
-
-
ns
Characterized but not implemented as production test. Guaranteed by design.
TPERIOD
crossover point
extended
crossover point
differential
data lines
source EOP width: tFEOPT
differential data to
SE0/EOP skew
n × TPERIOD + tFDEOP
receiver EOP width: tEOPR1, tEOPR2
002aab561
Fig 19. Differential data-to-EOP transition skew and EOP width
LPC1768_66_65_64_2
Objective data sheet
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Rev. 02 — 11 February 2009
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LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
11.7 SPI
Table 15. Dynamic characteristics of SPI pins
Tamb = −40 °C to +85 °C.
Symbol
Parameter
Min
Typ
Max
Unit
SPI master
TSPICYC
SPI cycle time
<tbd>
<tbd>
<tbd>
ns
tSPICLKH
SPICLK HIGH time
<tbd>
<tbd>
<tbd>
ns
tSPICLKL
SPICLK LOW time
<tbd>
<tbd>
<tbd>
ns
tSPIDSU
SPI data set-up time
<tbd>
<tbd>
<tbd>
ns
tSPIDH
SPI data hold time
<tbd>
<tbd>
<tbd>
ns
tSPIQV
SPI data output valid time
<tbd>
<tbd>
<tbd>
ns
tSPIOH
SPI output data hold time
<tbd>
<tbd>
<tbd>
ns
TSPICYC
SPI cycle time
<tbd>
<tbd>
<tbd>
ns
tSPICLKH
SPICLK HIGH time
<tbd>
<tbd>
<tbd>
ns
tSPICLKL
SPICLK LOW time
<tbd>
<tbd>
<tbd>
ns
tSPIDSU
SPI data set-up time
<tbd>
<tbd>
<tbd>
ns
tSPIDH
SPI data hold time
<tbd>
<tbd>
<tbd>
ns
tSPIQV
SPI data output valid time
<tbd>
<tbd>
<tbd>
ns
tSPIOH
SPI output data hold time
<tbd>
<tbd>
<tbd>
ns
SPI slave
TSPICYC
tSPICLKH
tSPICLKL
SCK (CPOL = 0)
SCK (CPOL = 1)
tSPIOH
tSPIQV
MOSI
DATA VALID
DATA VALID
tSPIDSU
MISO
DATA VALID
tSPIDH
DATA VALID
002aad986
Fig 20.
SPI master timing (CPHA = 1)
LPC1768_66_65_64_2
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LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
TSPICYC
tSPICLKH
tSPICLKL
SCK (CPOL = 0)
SCK (CPOL = 1)
tSPIOH
tSPIQV
MOSI
DATA VALID
DATA VALID
tSPIDSU
MISO
DATA VALID
tSPIDH
DATA VALID
002aad987
Fig 21.
SPI master timing (CPHA = 0)
TSPICYC
tSPICLKH
tSPICLKL
tSPIDSU
tSPIDH
SCK (CPOL = 0)
SCK (CPOL = 1)
MOSI
DATA VALID
DATA VALID
tSPIOH
tSPIQV
MISO
DATA VALID
DATA VALID
002aad988
Fig 22.
SPI slave timing (CPHA = 1)
LPC1768_66_65_64_2
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LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
TSPICYC
tSPICLKH
tSPICLKL
SCK (CPOL = 0)
SCK (CPOL = 1)
tSPIDSU
MOSI
DATA VALID
tSPIDH
DATA VALID
tSPIQV
MISO
DATA VALID
tSPIOH
DATA VALID
002aad989
Fig 23.
SPI slave timing (CPHA = 0)
LPC1768_66_65_64_2
Objective data sheet
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LPC1768/66/65/64
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32-bit ARM Cortex-M3 microcontroller
11.8 Ethernet (LPC1768/66/64 only)
Table 16.
Dynamic characteristics: Ethernet MAC pins
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Ethernet MAC signals for MIIM
Tcy(clk)
clock cycle time
on pin ENET_MDC
<tbd>
<tbd>
<tbd>
ns
tv(Q)
data output valid time
on pin ENET_MDIO; MDIO <tbd>
write
<tbd>
<tbd>
ns
tQZ
data output high-impedance time
<tbd>
<tbd>
<tbd>
ns
tsu(D)
data input set-up time
on pin ENET_MDIO; MDIO <tbd>
read
<tbd>
<tbd>
ns
th(D)
data input hold time
on pin ENET_MDIO; MDIO <tbd>
read
<tbd>
<tbd>
ns
on pin ENET_RXD; RMII
receive input
<tbd>
<tbd>
<tbd>
ns
on pin ENET_CRS; RMII
carrier sense input
<tbd>
<tbd>
<tbd>
ns
on pin ENET_RXER; RMII
receive error input
<tbd>
<tbd>
<tbd>
ns
on pin ENET_RXD; RMII
receive input
<tbd>
<tbd>
<tbd>
ns
on pin ENET_CRS; RMII
carrier sense input
<tbd>
<tbd>
<tbd>
ns
on pin ENET_RXER; RMII
receive error input
<tbd>
<tbd>
<tbd>
ns
on pin ENET_TXD; RMII
transmit output
<tbd>
<tbd>
<tbd>
ns
on pin ENET_TXEN; RMII
transmit enable
<tbd>
<tbd>
<tbd>
ns
on pin ENET_TXD; RMII
transmit output
<tbd>
<tbd>
<tbd>
ns
on pin ENET_TXEN; RMII
transmit enable
<tbd>
<tbd>
<tbd>
ns
Ethernet MAC signals for RMII
tsu(D)
th(D)
td(QV)
th(Q)
data input set-up time
data input hold time
data output valid delay time
data output hold time
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Tcy(clk)
ENET_MDC
tv(Q)
ENET_MDIO(O)
tQZ
tsu(D)
th(D)
ENET_MDIO(I)
002aad990
Fig 24.
Ethernet MAC MIIM timing
ENET_REF_CLK
td(QV)
th(Q)
ENET_TX_EN
ENET_TXD[1:0]
tsu(D)
th(D)
ENET_CRS
ENET_RXD[1:0]
ENET_RX_ER
002aad991
Fig 25.
Ethernet RMII timing
LPC1768_66_65_64_2
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11.9 I2S-bus interface (LPC1768/66/65 only)
Table 17. Dynamic characteristics: I2S-bus interface pins
Tamb = −40 °C to +85 °C.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Common to input and output
Tcy(clk)
clock cycle time
<tbd>
<tbd>
<tbd>
<tbd>
tf
fall time
<tbd>
<tbd>
<tbd>
<tbd>
tr
rise time
<tbd>
<tbd>
<tbd>
<tbd>
tWH
pulse width HIGH
<tbd>
<tbd>
<tbd>
<tbd>
tWL
pulse width LOW
<tbd>
<tbd>
<tbd>
<tbd>
tv(Q)
data output valid time
on pin I2STX_SDA
<tbd>
<tbd>
<tbd>
<tbd>
on pin I2STX_WS
<tbd>
<tbd>
<tbd>
<tbd>
on pin I2SRX_SDA
<tbd>
<tbd>
<tbd>
<tbd>
on pin I2SRX_WS
<tbd>
<tbd>
<tbd>
<tbd>
on pin I2SRX_SDA
<tbd>
<tbd>
<tbd>
<tbd>
on pin I2SRX_WS
<tbd>
<tbd>
<tbd>
<tbd>
Output
Input
tsu(D)
th(D)
data input set-up time
data output hold time
Tcy(clk)
tf
tr
I2STX_CLK
tWH
tWL
I2STX_SDA
tv(Q)
I2STX_WS
tv(Q)
002aad992
Fig 26. I2S-bus timing (output)
LPC1768_66_65_64_2
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NXP Semiconductors
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Tcy(clk)
tf
tr
I2SRX_CLK
tWH
tWL
I2SRX_SDA
tsu(D)
th(D)
I2SRX_WS
tsu(D)
tsu(D)
002aae159
Fig 27. I2S-bus timing (input)
LPC1768_66_65_64_2
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Rev. 02 — 11 February 2009
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32-bit ARM Cortex-M3 microcontroller
12. ADC electrical characteristics
Table 18. ADC characteristics
VDDA = 2.7 V to 3.6 V; Tamb = −40 °C to +85 °C; unless otherwise specified; ADC frequency <tbd>.
Symbol
Parameter
VIA
analog input voltage
Cia
analog input capacitance
ED
differential linearity error
EL(adj)
Conditions
Min
Typ
Max
Unit
0
-
VDDA
V
-
-
<tbd>
pF
[1][2][3]
-
2
<tbd>
LSB
integral non-linearity
[1][4]
-
1
<tbd>
LSB
offset error
[1][5]
-
-
<tbd>
LSB
EG
gain error
[1][6]
-
-
<tbd>
%
ET
absolute error
[1][7]
-
-
<tbd>
LSB
[8]
-
-
<tbd>
kΩ
EO
Rvsi
voltage source interface
resistance
SRin
input slew rate
<tbd>
<tbd>
<tbd>
V/ms
Tcy(ADC)
ADC clock cycle time
<tbd>
<tbd>
<tbd>
ns
tADC
ADC conversion time
<tbd>
<tbd>
<tbd>
ns
[1]
Conditions: VSSA = 0 V, VDDA = 3.3 V.
[2]
The ADC is monotonic, there are no missing codes.
[3]
The differential linearity error (ED) is the difference between the actual step width and the ideal step width. See Figure 28.
[4]
The integral non-linearity (EL(adj)) is the peak difference between the center of the steps of the actual and the ideal transfer curve after
appropriate adjustment of gain and offset errors. See Figure 28.
[5]
The offset error (EO) is the absolute difference between the straight line which fits the actual curve and the straight line which fits the
ideal curve. See Figure 28.
[6]
The gain error (EG) is the relative difference in percent between the straight line fitting the actual transfer curve after removing offset
error, and the straight line which fits the ideal transfer curve. See Figure 28.
[7]
The absolute error (ET) is the maximum difference between the center of the steps of the actual transfer curve of the non-calibrated ADC
and the ideal transfer curve. See Figure 28.
[8]
See Figure 29.
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offset
error
EO
gain
error
EG
4095
4094
4093
4092
4091
4090
(2)
7
code
out
(1)
6
5
(5)
4
(4)
3
(3)
2
1 LSB
(ideal)
1
0
1
2
3
4
5
6
7
4090
4091
4092
4093
4094
4095
4096
VIA (LSBideal)
offset error
EO
1 LSB =
VDDA − VSSA
4096
002aad948
(1) Example of an actual transfer curve.
(2) The ideal transfer curve.
(3) Differential linearity error (ED).
(4) Integral non-linearity (EL(adj)).
(5) Center of a step of the actual transfer curve.
Fig 28. 12-bit ADC characteristics
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32-bit ARM Cortex-M3 microcontroller
LPC17XX
x kΩ
AD0[y]
AD0[y]SAMPLE
x pF
Rvsi
x pF
VEXT
VSS
002aad949
Fig 29. Suggested ADC interface - LPC1768/66/65/64 AD0[y] pin
LPC1768_66_65_64_2
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13. DAC electrical characteristics (LPC1768/66/65 only)
Table 19. DAC electrical characteristics
VDDA = 2.7 V to 3.6 V; Tamb = −40 °C to +85 °C; unless otherwise specified; DAC frequency <tbd> MHz.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
PSRR
power supply rejection
ratio
∆VDDA = 100 mV
<tbd>
<tbd>
<tbd>
dB
VO
output voltage
count = maximum
VDDA − k
-
-
V
count = minimum
-
-
VSSA + k
V
ED
differential linearity error
-
-
±1
LSB
EL(adj)
integral non-linearity
-
-
±2
LSB
EO
offset error
-
-
±3
LSB
EG
gain error
-
-
±0.5
%
ET
absolute error
-
-
±4
LSB
CL
load capacitance
-
-
100
pF
RO
output resistance
1
-
4
Ω
ton
turn-on time
<tbd>
<tbd>
<tbd>
ns
ts
settling time
<tbd>
<tbd>
<tbd>
ns
<tbd>
<tbd>
<tbd>
ns
SR
slew rate
<tbd>
<tbd>
<tbd>
V/ms
glitch energy, full scale
<tbd>
<tbd>
<tbd>
nV.s
3 dB bandwidth
<tbd>
<tbd>
<tbd>
kHz
full scale
small change
B3dB
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14. Application information
14.1 Suggested USB interface solutions
VDD(3V3)
USB_UP_LED
USB_CONNECT
LPC17xx
SoftConnect switch
R1
1.5 kΩ
VBUS
USB_D+ RS = 33 Ω
USB_D−
USB-B
connector
RS = 33 Ω
VSS
002aad939
Fig 30. LPC1768/66/65/64 USB interface on a self-powered device
VDD(3V3)
R2
LPC17xx
USB_UP_LED
R1
1.5 kΩ
VBUS
USB_D+ RS = 33 Ω
USB-B
connector
USB_D− RS = 33 Ω
VSS
002aad940
Fig 31. LPC1768/66/65/64 USB interface on a bus-powered device
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VDD
R1
R2
R3
RSTOUT
R4
RESET_N
VBUS
ADR/PSW
ID
OE_N/INT_N
VDD
SPEED
SUSPEND
LPC17xx
R4
R5
DP
33 Ω
DM
33 Ω
Mini-AB
connector
ISP1302
R6
VSS
SCL
USB_SCL
SDA
USB_SDA
INT_N
EINTn
USB_D+
USB_D−
002aad941
Fig 32. LPC1768/66/65 USB OTG port configuration
VDD
USB_UP_LED
VSS
USB_D+
33 Ω
D+
USB_D−
33 Ω
D−
LPC17xx
15 kΩ
USB-A
connector
15 kΩ
VDD
VBUS
USB_PWRD
USB_OVRCR
USB_PPWR
FLAGA
ENA
5V
IN
LM3526-L
OUTA
002aad942
Fig 33. LPC1768/66/65 USB host port configuration
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NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
VDD
USB_UP_LED
VDD
USB_CONNECT
LPC17xx
VSS
USB_D+
33 Ω
D+
USB_D−
33 Ω
D−
VBUS
USB-B
connector
VBUS
002aad943
Fig 34. LPC1768/66/65/64 USB device port configuration
LPC1768_66_65_64_2
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NXP Semiconductors
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15. Package outline
LQFP100: plastic low profile quad flat package; 100 leads; body 14 x 14 x 1.4 mm
SOT407-1
c
y
X
A
51
75
50
76
ZE
e
E HE
A A2
(A 3)
A1
w M
θ
bp
Lp
pin 1 index
L
100
detail X
26
1
25
ZD
e
v M A
w M
bp
D
B
HD
v M B
0
5
10 mm
scale
DIMENSIONS (mm are the original dimensions)
UNIT
A
max.
A1
A2
A3
bp
c
D (1)
E (1)
e
mm
1.6
0.15
0.05
1.45
1.35
0.25
0.27
0.17
0.20
0.09
14.1
13.9
14.1
13.9
0.5
HD
HE
16.25 16.25
15.75 15.75
L
Lp
v
w
y
1
0.75
0.45
0.2
0.08
0.08
Z D (1) Z E (1)
1.15
0.85
1.15
0.85
θ
7o
o
0
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
VERSION
IEC
JEDEC
SOT407-1
136E20
MS-026
JEITA
EUROPEAN
PROJECTION
ISSUE DATE
00-02-01
03-02-20
Fig 35. Package outline SOT407-1 (LQFP100)
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16. Abbreviations
Table 20.
Abbreviations
Acronym
Description
ADC
Analog-to-Digital Converter
AHB
Advanced High-performance Bus
AMBA
Advanced Microcontroller Bus Architecture
APB
Advanced Peripheral Bus
BOD
BrownOut Detection
CAN
Controller Area Network
DAC
Digital-to-Analog Converter
DCC
Debug Communication Channel
DMA
Direct Memory Access
DSP
Digital Signal Processing
EOP
End Of Packet
ETM
Embedded Trace Macrocell
GPIO
General Purpose Input/Output
IRC
Internal RC
IrDA
Infrared Data Association
JTAG
Joint Test Action Group
MAC
Media Access Control
MIIM
Media Independent Interface Management
OHCI
Open Host Controller Interface
OTG
On-The-Go
PHY
Physical Layer
PLL
Phase-Locked Loop
PWM
Pulse Width Modulator
RIT
Repetitive Interrupt Timer
RMII
Reduced Media Independent Interface
SE0
Single Ended Zero
SPI
Serial Peripheral Interface
SSI
Serial Synchronous Interface
SSP
Synchronous Serial Port
TCM
Tightly Coupled Memory
TTL
Transistor-Transistor Logic
UART
Universal Asynchronous Receiver/Transmitter
USB
Universal Serial Bus
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17. Revision history
Table 21.
Revision history
Document ID
Release date
Data sheet status
Change notice
Supersedes
LPC1768_66_65_64_2
20090211
Objective data sheet
-
LPC1768_66_65_64_1
Modifications:
LPC1768_66_65_64_1
•
•
•
Data sheet descriptive title: added ‘up to 512 kB flash’
Figure 3 “LPC1768/66/65/64 memory map” on page 16: updated
Table 9 “Flash characteristics” on page 48: replaced
20090115
Objective data sheet
-
LPC1768_66_65_64_2
Objective data sheet
-
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18. Legal information
19. Data sheet status
Document status[1][2]
Product status[3]
Definition
Objective [short] data sheet
Development
This document contains data from the objective specification for product development.
Preliminary [short] data sheet
Qualification
This document contains data from the preliminary specification.
Product [short] data sheet
Production
This document contains the product specification.
[1]
Please consult the most recently issued document before initiating or completing a design.
[2]
The term ‘short data sheet’ is explained in section “Definitions”.
[3]
The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nxp.com.
19.1 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local NXP Semiconductors sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
19.2 Disclaimers
General — Information in this document is believed to be accurate and
reliable. However, NXP Semiconductors does not give any representations or
warranties, expressed or implied, as to the accuracy or completeness of such
information and shall have no liability for the consequences of use of such
information.
Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
Suitability for use — NXP Semiconductors products are not designed,
authorized or warranted to be suitable for use in medical, military, aircraft,
space or life support equipment, nor in applications where failure or
malfunction of an NXP Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. NXP Semiconductors accepts no liability for inclusion and/or use of
NXP Semiconductors products in such equipment or applications and
therefore such inclusion and/or use is at the customer’s own risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) may cause permanent
damage to the device. Limiting values are stress ratings only and operation of
the device at these or any other conditions above those given in the
Characteristics sections of this document is not implied. Exposure to limiting
values for extended periods may affect device reliability.
Terms and conditions of sale — NXP Semiconductors products are sold
subject to the general terms and conditions of commercial sale, as published
at http://www.nxp.com/profile/terms, including those pertaining to warranty,
intellectual property rights infringement and limitation of liability, unless
explicitly otherwise agreed to in writing by NXP Semiconductors. In case of
any inconsistency or conflict between information in this document and such
terms and conditions, the latter will prevail.
No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or the
grant, conveyance or implication of any license under any copyrights, patents
or other industrial or intellectual property rights.
19.3 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
I2C-bus — logo is a trademark of NXP B.V.
20. Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
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21. Contents
1
General description . . . . . . . . . . . . . . . . . . . . . . 1
2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4
Ordering information . . . . . . . . . . . . . . . . . . . . . 4
4.1
Ordering options . . . . . . . . . . . . . . . . . . . . . . . . 4
5
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 5
6
Pinning information . . . . . . . . . . . . . . . . . . . . . . 6
6.1
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
6.2
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 6
7
Functional description . . . . . . . . . . . . . . . . . . 14
7.1
Architectural overview. . . . . . . . . . . . . . . . . . . 14
7.2
ARM Cortex-M3 processor . . . . . . . . . . . . . . . 14
7.3
On-chip flash program memory . . . . . . . . . . . 15
7.4
On-chip SRAM . . . . . . . . . . . . . . . . . . . . . . . . 15
7.5
Memory Protection Unit (MPU). . . . . . . . . . . . 15
7.6
Memory map. . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.7
Nested Vectored Interrupt Controller (NVIC) . 17
7.7.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.7.2
Interrupt sources. . . . . . . . . . . . . . . . . . . . . . . 17
7.8
Pin connect block . . . . . . . . . . . . . . . . . . . . . . 17
7.9
General purpose DMA controller . . . . . . . . . . 17
7.9.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.10
Fast general purpose parallel I/O . . . . . . . . . . 18
7.10.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.11
Ethernet (LPC1768/66/64 only) . . . . . . . . . . . 19
7.11.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.12
USB interface . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.12.1
USB device controller . . . . . . . . . . . . . . . . . . . 20
7.12.1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.12.2
USB host controller (LPC1768/66/65 only). . . 21
7.12.2.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.12.3
USB OTG controller (LPC1768/66/65 only) . . 21
7.12.3.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.13
CAN controller and acceptance filters . . . . . . 21
7.13.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.14
12-bit ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.14.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.15
10-bit DAC (LPC1768/66/65 only) . . . . . . . . . 22
7.15.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.16
UARTs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.16.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.17
SPI serial I/O controller. . . . . . . . . . . . . . . . . . 23
7.17.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.18
SSP serial I/O controller . . . . . . . . . . . . . . . . . 23
7.18.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7.19
I2C-bus serial I/O controllers. . . . . . . . . . . . . . 24
7.19.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
I2S-bus serial I/O controllers . . . . . . . . . . . . .
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General purpose 32-bit timers/external
event counters . . . . . . . . . . . . . . . . . . . . . . . .
7.21.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.22
Pulse width modulator . . . . . . . . . . . . . . . . . .
7.22.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.23
Motor control PWM . . . . . . . . . . . . . . . . . . . .
7.24
Quadrature Encoder Interface (QEI) . . . . . . .
7.24.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.25
Repetitive Interrupt (RI) timer . . . . . . . . . . . . .
7.25.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.26
System tick timer . . . . . . . . . . . . . . . . . . . . . .
7.27
Watchdog timer . . . . . . . . . . . . . . . . . . . . . . .
7.27.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.28
RTC and backup registers . . . . . . . . . . . . . . .
7.28.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.29
Clocking and power control . . . . . . . . . . . . . .
7.29.1
Crystal oscillators . . . . . . . . . . . . . . . . . . . . . .
7.29.1.1 Internal RC oscillator . . . . . . . . . . . . . . . . . . .
7.29.1.2 Main oscillator . . . . . . . . . . . . . . . . . . . . . . . .
7.29.1.3 RTC oscillator. . . . . . . . . . . . . . . . . . . . . . . . .
7.29.2
Main PLL (PLL0) . . . . . . . . . . . . . . . . . . . . . .
7.29.3
USB PLL (PLL1). . . . . . . . . . . . . . . . . . . . . . .
7.29.4
RTC clock output . . . . . . . . . . . . . . . . . . . . . .
7.29.5
Wake-up timer . . . . . . . . . . . . . . . . . . . . . . . .
7.29.6
Power control . . . . . . . . . . . . . . . . . . . . . . . . .
7.29.6.1 Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . .
7.29.6.2 Deep-sleep mode. . . . . . . . . . . . . . . . . . . . . .
7.29.6.3 Power-down mode . . . . . . . . . . . . . . . . . . . . .
7.29.6.4 Deep power-down mode . . . . . . . . . . . . . . . .
7.29.6.5 Wakeup interrupt controller . . . . . . . . . . . . . .
7.29.7
Peripheral power control . . . . . . . . . . . . . . . .
7.29.8
Power domains. . . . . . . . . . . . . . . . . . . . . . . .
7.30
System control . . . . . . . . . . . . . . . . . . . . . . . .
7.30.1
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.30.2
Brownout detection . . . . . . . . . . . . . . . . . . . .
7.30.3
Code security (Code Read Protection - CRP)
7.30.4
APB interface . . . . . . . . . . . . . . . . . . . . . . . . .
7.30.5
AHB multilayer matrix. . . . . . . . . . . . . . . . . . .
7.30.6
External interrupt inputs . . . . . . . . . . . . . . . . .
7.30.7
Memory mapping control . . . . . . . . . . . . . . . .
7.31
Emulation and debugging. . . . . . . . . . . . . . . .
8
Limiting values . . . . . . . . . . . . . . . . . . . . . . . .
9
Thermal characteristics . . . . . . . . . . . . . . . . .
9.1
Thermal characteristics . . . . . . . . . . . . . . . . .
10
Static characteristics . . . . . . . . . . . . . . . . . . .
7.20
7.20.1
7.21
24
25
25
25
26
26
27
27
27
28
28
28
28
28
29
29
29
29
30
30
30
31
31
31
31
32
32
32
33
33
33
33
34
35
35
36
36
36
37
37
37
37
37
38
38
40
continued >>
LPC1768_66_65_64_2
Objective data sheet
© NXP B.V. 2009. All rights reserved.
Rev. 02 — 11 February 2009
71 of 72
LPC1768/66/65/64
NXP Semiconductors
32-bit ARM Cortex-M3 microcontroller
10.1
10.2
11
11.1
11.2
11.3
11.4
11.5
11.6
11.7
11.8
11.9
12
13
14
14.1
15
16
17
18
19
19.1
19.2
19.3
20
21
Power consumption . . . . . . . . . . . . . . . . . . . .
Electrical pin characteristics . . . . . . . . . . . . . .
Dynamic characteristics . . . . . . . . . . . . . . . . .
Flash memory. . . . . . . . . . . . . . . . . . . . . . . . .
External clock . . . . . . . . . . . . . . . . . . . . . . . . .
Internal oscillators. . . . . . . . . . . . . . . . . . . . . .
I2C-bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SSP interface . . . . . . . . . . . . . . . . . . . . . . . . .
USB interface . . . . . . . . . . . . . . . . . . . . . . . . .
SPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ethernet (LPC1768/66/64 only) . . . . . . . . . . .
I2S-bus interface (LPC1768/66/65 only) . . . . .
ADC electrical characteristics . . . . . . . . . . . .
DAC electrical characteristics
(LPC1768/66/65 only) . . . . . . . . . . . . . . . . . . . .
Application information. . . . . . . . . . . . . . . . . .
Suggested USB interface solutions . . . . . . . .
Package outline . . . . . . . . . . . . . . . . . . . . . . . .
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . .
Revision history . . . . . . . . . . . . . . . . . . . . . . . .
Legal information. . . . . . . . . . . . . . . . . . . . . . .
Data sheet status . . . . . . . . . . . . . . . . . . . . . .
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contact information. . . . . . . . . . . . . . . . . . . . .
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
43
46
48
48
48
49
50
51
52
53
56
58
60
63
64
64
67
68
69
70
70
70
70
70
70
71
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP B.V. 2009.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
Date of release: 11 February 2009
Document identifier: LPC1768_66_65_64_2