ON LC87FBH08A 8-bit microcontroller Datasheet

LC87FBH08A
8-bit Microcontroller
with 8K-byte Flash ROM and 256-byte RAM
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Overview
The LC87FBH08A is an 8-bit microcontroller that, centered around a CPU
running at a minimum bus cycle time of 83.3ns, integrates on a single chip
a number of hardware features such as 8K-byte flash ROM (On-boardprogrammable), 256-byte RAM, an On-chip-debugger (flash versions only),
sophisticated 16-bit timers/counters (may be divided into 8-bit timers), a
16-bit timer/counter (may be divided into 8-bit timers/counters or 8-bit
PWMs), two 8-bit timers with a prescaler, a base timer serving as a timeof-day clock, a high-speed clock counter, a synchronous SIO interface, an
asynchronous/synchronous SIO interface, a UART interface (full duplex),
two 12-bit PWM channels, a 12-bit/8-bit 11-channel AD converter, a highspeed clock counter, a system clock frequency divider, an internal highaccuracy oscillator, a reference voltage generator circuit, an internal reset
and a 20-source 10-vector interrupt feature.
LQFP36 7x7 / QFP36
VQLP32 4x4
[Build to order]
Features
Flash ROM
8192 8 bits
Capable of On-board programming with wide range (2.2 to 5.5V) of
voltage source.
Block-erasable in 128 byte units
Writable in 2-byte units
RAM
256  9 bits
Minimum Bus Cycle
83.3ns (12MHz at VDD=2.7V to 5.5V, Ta=40C to +85C)
100ns (10MHz at VDD=2.2V to 5.5V, Ta=40C to +85C)
250ns ( 4MHz at VDD=1.8V to 5.5V, Ta=40C to +85C)
Note: The bus cycle time here refers to the ROM read speed.
* This product is licensed from Silicon Storage Technology, Inc. (USA).
ORDERING INFORMATION
See detailed ordering and shipping information on page 32 of this data sheet.
© Semiconductor Components Industries, LLC, 2016
June 2016 - Rev. 1
1
Publication Order Number :
LC87FBH08A/D
LC87FBH08A
Minimum Instruction Cycle Time
250ns (12MHz at VDD=2.7V to 5.5V, Ta=40C to +85C)
300ns (10MHz at VDD=2.2V to 5.5V, Ta=40C to +85C)
750ns ( 4MHz at VDD=1.8V to 5.5V, Ta=40C to +85C)
Ports
 Normal withstand voltage I/O ports
Ports I/O direction can be designated in 1-bit units
Ports I/O direction can be designated in 4-bit units
Dedicated oscillator ports/input ports
Reset pin
Power pins
17 (P1n, P20, P21, P30, P31, P70 to P73 CF2/XT2)
8 (P0n)
1 (CF1/XT1)
1 (RES)
3 (VSS1, VSS2, VDD1)
Timers
Timer 0: 16-bit timer/counter with a capture register.
Mode 0: 8-bit timer with an 8-bit programmable prescaler (with an 8-bit capture register)  2 channels
Mode 1: 8-bit timer with an 8-bit programmable prescaler (with an 8-bit capture register)
+ 8-bit counter (with an 8-bit capture register)
Mode 2: 16-bit timer with an 8-bit programmable prescaler (with a 16-bit capture register)
Mode 3: 16-bit counter (with a 16-bit capture register)
Timer 1: 16-bit timer/counter that supports PWM/toggle outputs
Mode 0: 8-bit timer with an 8-bit prescaler (with toggle outputs) + 8-bit timer/
counter with an 8-bit prescaler (with toggle outputs)
Mode 1: 8-bit PWM with an 8-bit prescaler  2 channels
Mode 2: 16-bit timer/counter with an 8-bit prescaler (with toggle outputs)
(toggle outputs also possible from the lower-order 8 bits)
Mode 3: 16-bit timer with an 8-bit prescaler (with toggle outputs)
(The lower-order 8 bits can be used as PWM)
Timer 6: 8-bit timer with a 6-bit prescaler (with toggle outputs)
Timer 7: 8-bit timer with a 6-bit prescaler (with toggle outputs)
Base timer
1) The clock is selectable from the subclock (32.768kHz crystal oscillation), system clock, and timer 0 prescaler
output.
2) Interrupts are programmable in 5 different time schemes
High-speed Clock Counter
Can count clocks with a maximum clock rate of 20MHz (at a main clock of 10MHz).
Can generate output real time.
SIO
SIO0: 8-bit synchronous serial interface
1) LSB first/MSB first mode selectable
2) Built-in 8-bit baudrate generator (maximum transfer clock cycle =4/3 tCYC)
3) Automatic continuous data transmission (1 to 256 bits, specifiable in 1 bit units, suspension and resumption of
data transmission possible in 1 byte units)
SIO1: 8-bit asynchronous/synchronous serial interface
Mode 0: Synchronous 8-bit serial I/O (2- or 3-wire configuration, 2 to 512 tCYC transfer clocks)
Mode 1: Asynchronous serial I/O (half-duplex, 8 data bits, 1 stop bit, 8 to 2048 tCYC baudrates)
Mode 2: Bus mode 1 (start bit, 8 data bits, 2 to 512 tCYC transfer clocks)
Mode 3: Bus mode 2 (start detect, 8 data bits, stop detect)
■UART1
Full duplex
7/8/9 bit data bits selectable
1 stop bit (2-bit in continuous data transmission)
Built-in baudrate generator
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LC87FBH08A
AD converter: 12 bits/8 bits  11 channels
Successive approximation
12 bits/8 bits AD converter resolution selectable
Port input: 10 channels, Reference voltage input: 1 channel
PWM: Multifrequency 12-bit PWM  2 channels
Reference voltage generator circuit (VREF17)
Capable of monitoring the power supply voltage by AD conversion of frequency variable RC oscillator circuit’s
reference voltage.
Remote Control Receiver Circuit (sharing pins with P73, INT3, and T0IN)
Noise rejection function (noise filter time constant selectable from 1 tCYC, 32 tCYC, and 128 tCYC)
Clock Output Function
Capable generating clock outputs with a frequency of 1/1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64 of the source clock selected
as the system clock.
Capable of generating the source clock for the subclock.
Watchdog Timer
Capable of generating an internal reset on an overflow of a timer running on the low-speed RC oscillator clock or
subclock.
Operating mode at standby is selectable from 3 modes (continue counting/stop operation/stop counting with a
count value held).
Interrupts
20 sources, 10 vector addresses
1) Provides three levels (low (L), high (H), and highest (X)) of multiplex interrupt control. Any interrupt requests of
the level equal to or lower than the current interrupt are not accepted.
2) When interrupt requests to two or more vector addresses occur at the same time, the interrupt of the highest level
takes precedence over the other interrupts. For interrupts of the same level, the interrupt into the smallest vector
address takes precedence.
No.
Vector Address
Level
1
00003H
X or L
Interrupt Source
2
0000BH
X or L
INT1
3
00013H
H or L
INT2/T0L/INT4
4
0001BH
H or L
INT3/INT5/base timer
5
00023H
H or L
T0H
6
0002BH
H or L
T1L/T1H
7
00033H
H or L
SIO0/UART1 receive
8
0003BH
H or L
SIO1/UART1 transmit
9
00043H
H or L
ADC/T6/T7/ PWM4, PWM5
10
0004BH
H or L
Port 0
INT0
Priority levels X > H > L
Of interrupts of the same level, the one with the smallest vector address takes precedence.
Subroutine Stack Levels: 128levels (The stack is allocated in RAM.)
High-speed Multiplication/Division Instructions
16 bits  8 bits
(5 tCYC execution time)
24 bits  16 bits
(12 tCYC execution time)
16 bits  8 bits
(8 tCYC execution time)
24 bits  16 bits
(12 tCYC execution time)
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LC87FBH08A
Oscillation Circuits
Internal oscillation circuits
Low-speed RC oscillation circuit (SRC):
For system clock / For Watchdog timer (100kHz)
Medium-speed RC oscillation circuit (RC):
For system clock (1MHz)
Frequency variable RC oscillation circuit (MRC): For system clock (8MHz  1.5%, Ta=10C to +85C)
External oscillation circuits
Hi-speed CF oscillation circuit (CF):
For system clock, with internal Rf
Low speed crystal oscillation circuit (X’tal): For low-speed system clock / For Watchdog timer, with internal Rf
1) The CF and crystal oscillation circuits share the same pins. The active circuit is selected under program control.
2) Both the CF and crystal oscillator circuits stop operation on a system reset. After reset is released, oscillation
is stopped so start the oscillation operation by program.
System Clock Divider Function
Can run on low current.
The minimum instruction cycle selectable from 300ns, 600ns, 1.2s, 2.4s, 4.8s, 9.6s, 19.2s, 38.4s, and
76.8s (at a main clock rate of 10MHz).
Internal Reset Function
Power-on reset (POR) function
1) POR reset is generated only at power-on time.
2) The POR release level can be selected from 8 levels (1.67V, 1.97V, 2.07V, 2.37V, 2.57V, 2.87V, 3.86V, and
4.35V) through option configuration.
Low-voltage detection reset (LVD) function
1) LVD and POR functions are combined to generate resets when power is turned on and when power voltage falls
below a certain level.
2) The use or disuse of the LVD function and the low voltage threshold level (7 levels: 1.91V, 2.01V, 2.31V, 2.51V,
2.81V, 3.79V, 4.28V) can be selected by optional configuration.
Standby Function
HALT mode: Halts instruction execution while allowing the peripheral circuits to continue operation.
1) Oscillation is not halted automatically.
2) There are four ways of resetting the HALT mode.
(1) Setting the reset pin to the low level
(2) System resetting by low-voltage detection
(3) System resetting by watchdog timer
(4) Occurrence of an interrupt
HOLD mode: Suspends instruction execution and the operation of the peripheral circuits.
1) The CF, low-/medium-/ Frequency variable RC, and crystal oscillators automatically stop operation.
Note: The oscillation of the low-speed RC oscillator is also controlled directly by the watchdog timer and its
standby-mode-time oscillation is also controlled.
2) There are five ways of resetting the HOLD mode.
(1) Setting the reset pin to the lower level.
(2) System resetting by low-voltage detection
(3) System resetting by watchdog timer
(4) Having an interrupt source established at either INT0, INT1, INT2, INT4, INT5
* INT0 and INT1 HOLD mode reset is available only when level detection is set.
(5) Having an interrupt source established at port 0.
Continued on next page.
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LC87FBH08A
Continued from preceding page.
X'tal HOLD mode: Suspends instruction execution and the operation of the peripheral circuits except the base timer.
1) The CF, low-/medium-/ Frequency variable RC oscillators automatically stop operation.
Note: The oscillation of the low-speed RC oscillator is also controlled directly by the watchdog timer and its
standby-mode-time oscillation is also controlled.
2) The state of crystal oscillation established when the X'tal HOLD mode is entered is retained.
3) There are six ways of resetting the X'tal HOLD mode.
(1) Setting the reset pin to the low level.
(2) System resetting by watchdog timer or low-voltage detection.
(3) System resetting by watchdog timer or low-voltage detection.
(4) Having an interrupt source established at either INT0, INT1, INT2, INT4, INT5
* INT0 and INT1 HOLD mode reset is available only when level detection is set.
(5) Having an interrupt source established at port 0.
(6) Having an interrupt source established in the base timer circuit.
Note: Available only when X’tal oscillation is selected.
Onchip Debugger (flash versions only)
Supports software debugging with the microcontroller mounted on the target board.
Software break setting
Stepwise execution of instructions
Real time RAM data monitoring function
All the RAM data map contents can be monitored and rewritten on the screen when the program is running.
(Part of the SFR data cannot be rewritten.)
Two channels of on-chip debugger pins are available to be compatible with small pin count devices.
DBGP0 (P0), DBGP1 (P1)
Data Security Function (flash versions only)
Protects the program data stored in flash memory from unauthorized read or copy.
Note: This data security function does not necessarily provide absolute data security.
Package Form
QFP36(7mm7mm) : Pb-Free and Halogen Free type
VQLP32(4mm4mm) : Pb-Free and Halogen Free type (Build-to-order)
Development Tools
On-chip-debugger : (1) TCB87 TypeB + LC87FBH08A
(2) TCB87 TypeC (3 wire version) + LC87FBH08A
Flash ROM Programming Boards
Package
Programming boards
QFP36 (7mm7mm)
W87F24Q
VQLP32 (4mm4mm)
(build-to-order )
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5
LC87FBH08A
Flash ROM Programmer
Maker
Model
Single
AF9709/AF9709B/AF9709C
Programmer
(Including Ando Electric Co., Ltd. models)
Gang
(Including Ando Electric Co., Ltd. models)
AF9723/AF9723B(Main body)
Flash Support Group, Inc.
(FSG)
Programmer
AF9833(Unit)
(Including Ando Electric Co., Ltd. models)
Flash Support Group, Inc.
(FSG)
+
ON Semiconductor
Device
Rev 03.28 or later
87F008SU
-
-
-
-
(Note 2)
-
AF9101/AF9103(Main body)
In-circuit
Programmer
(FSG models)
SIB87(Inter Face Driver)
(ON Semiconductor model)
(Note 1)
ON Semiconductor
Supported version
Single/Gang
SKK / SKK Type B / SKK Type C
Programmer
(SanyoFWS)
1.07 or later
In-circuit/Gang
SKK-DBG Type B / SKK-DBG Type C
Chip Data Version
Programmer
(SanyoFWS)
2.38 or later
Application Version
LC87FBH08
For information about AF-Series:
Flash Support Group, Inc.
TEL: +81-53-459-1050
E-mail: [email protected]
Note1: On-board-programmer from FSG (AF9101/AF9103) and serial interface driver from our company (SIB87)
together can give a PC-less, standalone on-board-programming capabilities.
Note2: It needs a special programming devices and applications depending on the use of programming environment.
Please ask FSG or our company for the information.
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LC87FBH08A
Package Dimensions
unit : mm
LQFP36 7x7 / QFP36
CASE 561AV
ISSUE A
0.50.2
9.00.2
36
7.00.1
9.00.2
7.00.1
1 2
0.65
0.30.1
(1.5)
0 to 10
0.10.1
1.7 MAX
(0.9)
0.150.05
0.13
0.10
SOLDERING FOOTPRINT*
GENERIC
MARKING DIAGRAM*
8.40
XXXXXXXX
YDD
8.40
(Unit: mm)
XXXXX = Specific Device Code
Y = Year
DD = Additional Traceability Data
XXXXXXXX
YMDDD
XXXXX = Specific Device Code
Y = Year
M = Month
DDD = Additional Traceability Data
0.65
0.43
1.00
*This information is generic. Please refer to
device data sheet for actual part marking.
NOTE: The measurements are not to guarantee but for reference only.
*For additional information on our Pb-Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
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7
LC87FBH08A
Package Dimensions
unit : mm
[Build to order]
VQLP32 4x4
CASE 602AE
ISSUE A
GENERIC MARKING DIAGRAM*
XXXXXX
YMDDD
XXXXX = Specific Device Code
Y = Year
M = Month
DDD = Additional Traceability Data
XXXXXX
YDD
XXXXX = Specific Device Code
Y = Year
DD = Additional Traceability Data
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*This information is generic. Please refer to
device data sheet for actual part marking.
LC87FBH08A
Pin Assignment
27
26
25
24
23
22
21
20
19
P03/AN3
P02/AN2
P01/AN1
P00/AN0
VSS2
N.C.
P31/PWM5/INT5/T1IN
P30/PWM4/INT5/T1IN
P21/URX/INT4/T1IN/PWM5
LQFP36 7x7 / QFP36
28
29
30
31
32
33
34
35
36
LC87FBH08A
18
17
16
15
14
13
12
11
10
P20/UTX/INT4/T1IN/PWM4
P17/T1PWMH/BUZ
P16/T1PWML
N.C.
N.C.
P15/SCK1/DGBP10
P14/SI1/SB1/DBGP11
P13/SO1/DBGP12
P12/SCK0
P73/INT3/T0IN
RES
N.C.
VSS1
CF1/XT1
CF2/XT2
VDD1
P10/SO0
P11/SI0/SB0
1
2
3
4
5
6
7
8
9
P04/AN4
P05/AN5/CKO/DBGP00
P06/AN6/T6O/DBGP01
P07/T7O/DBGP02
N.C.
N.C.
P70/INT0/T0LCP/AN8
P71/INT1/T0HCP/AN9
P72/INT2/T0IN/AN10
Top view
QFP36
NAME
QFP36
NAME
1
P73/INT3/T0IN
19
P21/URX/INT4/T1IN/PWM5
2
RES
20
P30/PWM4/INT5/T1IN
3
N.C.
21
P31/PWM5/INT5/T1IN
4
VSS1
22
N.C.
5
CF1/XT1
23
VSS2
6
CF2/XT2
24
P00/AN0
7
VDD1
25
P01/AN1
8
P10/SO0
26
P02/AN2
9
P11/SI0/SB0
27
P03/AN3
10
P12/SCK0
28
P04/AN4
11
P13/SO1/DBGP12
29
P05/AN5/CKO/DBGP00
12
P14/SI1/SB1/DBGP11
30
P06/AN6/T6O/DBGP01
13
P15/SCK1/DBGP10
31
P07/T7O/DBGP02
14
N.C.
32
N.C.
15
N.C.
33
N.C.
16
P16/T1PWML
34
P70/INT0/T0LCP/AN8
17
P17/T1PWMH/BUZ
35
P71/INT1/T0HCP/AN9
18
P20/UTX/INT4/T1IN/PWM4
36
P72/INT2/T0IN/AN10
Note: N.C. pins must be held open (disconnected).
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LC87FBH08A
Pin Assignment
19 P31/PWM5/INT5/T1IN
18 P30/PWM4/INT5/T1IN
17 P21/URX/INT4/T1IN/PWM5
22 P01/AN1
21 P00/AN0
20 VSS2
24 P03/AN3
23 P02/AN2
VQLP32 4x4 [Buitd to order]
16 P20/UTX/INT4/T1IN/PWM4
P04/AN4 25
P05/AN5/CKO/DBGP00 26
P06/AN6/T6O/DBGP01 27
15 N.C.
14 P17/T1PWMH/BUZ
P07/T7O/DBGP02 28
P70/INT0/T0LCP/AN8 29
P71/INT1/T0HCP/AN9 30
LC87FBH08A
13 P16/T1PWML
12 P15/SCK1/DBGP10
11 P14/SI1/SB1/DBGP11
10 P13/SO1/DBGP12
P72/INT2/T0IN/AN10 31
P73/INT3/T0IN 32
P10/SO0 7
P11/SI0/SB0 8
CF1/XT1 4
CF2/XT2 5
VDD1 6
N.C. 2
VSS1 3
RES 1
9 P12/SCK0
Top view
VQLP32
NAME
VQLP32
NAME
1
RES
17
P21/URX/INT4/T1IN/PWM5
2
N.C.
18
P30/PWM4/INT5/T1IN
3
VSS1
19
P31/PWM5/INT5/T1IN
4
CF1/XT1
20
VSS2
5
CF2/XT2
21
P00/AN0
6
VDD1
22
P01/AN1
7
P10/SO0
23
P02/AN2
8
P11/SI0/SB0
24
P03/AN3
9
P12/SCK0
25
P04/AN4
10
P13/SO1/DBGP12
26
P05/AN5/CKO/DBGP00
11
P14/SI1/SB1/DBGP11
27
P06/AN6/T6O/DBGP01
12
P15/SCK1/DBGP10
28
P07/T7O/DBGP02
13
P16/T1PWML
29
P70/INT0/T0LCP/AN8
14
P17/T1PWMH/BUZ
30
P71/INT1/T0HCP/AN9
15
N.C.
31
P72/INT2/T0IN/AN10
16
P20/UTX/INT4/T1IN/PWM4
32
P73/INT3/T0IN
Note: N.C. pins must be held open (disconnected).
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LC87FBH08A
System Block Diagram
Interrupt control
IR
Flash ROM
SRC
Clock
generator
Standby control
CF/
X’tal
PLA
PC
RC
MRC
Reference voltage
generator circuit
ACC
WDT
Reset circuit
(LVD/POR)
Reset control
RES
B register
C register
SIO0
Bus interface
SIO1
Port 0
Timer 0
Port 1
Timer 1
Port 2
Timer 6
Port 3
Timer 7
Port 7
Base timer
ADC
UART1
INT0 to 2
INT3 (Noise filter)
PWM4
Port 2 INT4
PWM5
Port 3 INT5
ALU
PSW
RAR
RAM
Stack pointer
On-chip debugger
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LC87FBH08A
Pin Function Chart
Pin Name
I/O
Description
Option
VSS1, VSS2
-
- Power supply pin
No
VDD1
-
+ Power supply pin
No
Port 0
I/O
 8-bit I/O port
 I/O specifiable in 4-bit units
P00 to P07
 Pull-up resistors can be turned on and off in 4-bit units.
 HOLD reset input
 Port 0 interrupt input
 Pin functions
Yes
P05: System clock output
P06: Timer 6 toggle output
P07: Timer 7 toggle output
P00(AN0) to P06(AN6): AD converter input
P05(DBGP00) to P07(DBGP02): On-chip debugger 0 port
Port 1
I/O
 8-bit I/O port
 I/O specifiable in 1-bit units
P10 to P17
 Pull-up resistors can be turned on and off in 1-bit units.
 Pin functions
P10: SIO0 data output
P11: SIO0 data input/bus I/O
P12: SIO0 clock I/O
Yes
P13: SIO1 data output
P14: SIO1 data input / bus I/O
P15: SIO1 clock I/O
P16: Timer 1PWML output
P17: Timer 1PWMH output / beeper output
P15(DBGP10) to P13(DBGP12): On-chip-debugger 1 port
Port 2
I/O
 2-bit I/O port
 I/O specifiable in 1-bit units
P20 to P21
 Pull-up resistors can be turned on and off in 1-bit units.
 Pin functions
P20: UART transmit / PWM4 output
P21: UART receive / PWM5 output
P20 to P21: INT4 input / HOLD reset input / timer 1 event input / timer 0L capture input /
Yes
timer 0H capture input
Interrupt acknowledge types
INT4
Port 3
P30 to P31
I/O
Rising
Falling
enable
enable
Rising &
Falling
enable
H level
L level
disable
disable
 2-bit I/O port
 I/O specifiable in 1 bit units
 Pull-up resistors can be turned on and off in 1 bit units.
 Pin functions
P30: PWM4 output
P31: PWM5 output
P30 to P31: INT5 input/HOLD reset input / timer 1 event input / timer 0L capture input /
Yes
timer 0H capture input
Interrupt acknowledge types
INT5
Rising
Falling
enable
enable
Rising &
Falling
enable
H level
L level
disable
disable
Continued on next page.
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12
LC87FBH08A
Continued from preceding page.
Pin Name
Port 7
I/O
Description
Option
 4-bit I/O port
I/O
 I/O specifiable in 1 bit units
P70 to P73
 Pull-up resistors can be turned on and off in 1 bit units.
 Pin functions
P70: INT0 input / HOLD reset input / timer 0L capture input
P71: INT1 input / HOLD reset input / timer 0H capture input
P72: INT2 input / HOLD reset input / timer 0 event input / timer 0L capture input
P73: INT3 input (with noise filter) / timer 0 event input / timer 0H capture input
P70(AN8) to P72(AN10): AD converter input
No
Interrupt acknowledge types
RES
CF1/XT1
I/O
Rising
Falling
Rising &
Falling
H level
L level
enable
INT0
enable
enable
disable
enable
INT1
enable
enable
disable
enable
enable
INT2
enable
enable
enable
disable
disable
INT3
enable
enable
enable
disable
disable
External reset input / internal reset output
No
 Ceramic resonator or 32.768kHz crystal oscillator input pin
I
 Pin function
No
General-purpose input port
CF2/XT2
 Ceramic resonator or 32.768kHz crystal oscillator output pin
I/O
 Pin function
No
General-purpose I/O port
Port Output Types
The table below lists the types of port outputs and the presence/absence of a pull-up resistor.
Data can be read into any input port even if it is in the output mode.
Port Name
Option selected in
units of
Option type
P00 to P07
1 bit
1
P10 to P17
1 bit
Output type
Pull-up resistor
CMOS
Programmable (Note 1)
2
Nch-open drain
No
1
CMOS
Programmable
2
Nch-open drain
Programmable
CMOS
Programmable
Programmable
P20 to P21
1 bit
1
2
Nch-open drain
P30 to P31
1 bit
1
CMOS
Programmable
2
Nch-open drain
Programmable
Programmable
P70
-
No
Nch-open drain
P71 to P73
-
No
CMOS
Programmable
CF2/XT2
-
No
Ceramic resonator/32.768kHz crystal resonator
No
output Nch-open drain
(N-channel open drain when set to general-purpose
output port)
Note 1: The control of the presence or absence of the programmable pull-up resistors for port 0 and the switching
between low-and high-impedance pull-up connection is exercised in nibble (4-bit) units (P00 to 03 or
P04 to 07).
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13
LC87FBH08A
User Option Table
Option Name
Port output type
Mask version
Flash-ROM
Option Selected in
*1
Version
Units of
P00 to P07


1 bit
CMOS
P10 to P17


1 bit
CMOS
P20 to P21


1 bit
CMOS
Option to be Applied on
Option Selection
Nch-open drain
Nch-open drain
Nch-open drain
P30 to P31


1 bit
CMOS
-


-
00000h

-
Nch-open drain
Program start
address
*2
Low-voltage
01E00h

Detect function
Enable:Use
detection reset
function
Power-on reset
Disable:Not Used
Detect level


-
7-level
Power-On reset level


-
8-level
function
*1: Mask option selection - No change possible after mask is completed.
*2: Program start address of the mask version is 00000h.
Recommended Unused Pin Connections
Recommended Unused Pin Connections
Port Name
Board
Software
P00 to P07
Open
Output low
P10 to P17
Open
Output low
P20 to P21
Open
Output low
P30 to P31
Open
Output low
P70 to P73
Open
Output low
CF1/XT1
Pulled low with a 100k resistor or less
General-purpose input port
CF2/XT2
Pulled low with a 100k resistor or less
General-purpose input port
On-chip Debugger Pin Connection Requirements
For the treatment of the on-chip debugger pins, refer to the separately available documents entitled "RD87 on-chip
debugger installation manual".
Power Pin Treatment Recommendations (VDD1, VSS1)
Connect bypass capacitors that meet the following conditions between the VDD1 and VSS1 pins:
Connect among the VDD1 and VSS1 pins and bypass capacitors C1 and C2 with the shortest possible heavy lead
wires, making sure that the impedances between the both pins and the bypass capacitors are as possible (L1=L1’ ,
L2=L2’).
Connect a large-capacity capacitor C1 and a small-capacity capacitor C2 in parallel.
The capacitance of C2 should approximately 0.1F.
L2
L1
VSS1
C1
C2
VDD1
L1’
L2’
Note: Be sure to electrically short-circuit between the VSS1 and VSS2 pins.
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14
LC87FBH08A
Absolute Maximum Ratings at Ta = 25C, VSS1 = VSS2 = 0V
Specification
Parameter
Symbol
Pin/Remarks
Conditions
VDD[V]
Maximum supply
min
typ
max
VDD max
VDD1
0.3
+6.5
Input voltage
VI
CF1
0.3
VDD+0.3
Input/output
VIO
Ports 0, 1, 2, 3,
0.3
VDD+0.3
voltage
voltage
High level output current
Peak output
Port 7, CF2, RES
IOPH(1)
Mean output
CMOS output select
Per 1 applicable pin
P71 to P73
Per 1 applicable pin
-5
IOMH(1)
Ports 0, 1, 2, 3
CMOS output select
7.5
Per 1 applicable pin
(Note 1-1)
IOMH(2)
P71 to P73
Per 1 applicable pin
Total output
IOAH(1)
Ports 0, 1, 2, 3,
Total of all applicable pins
current
IOPL(1)
Mean output
Total output
20
IOPL(2)
P00, P01
Per 1 applicable pin
30
IOPL(3)
Port 7, CF2
Per 1 applicable pin
10
IOML(1)
P02 to P07
Per 1 applicable pin
IOML(2)
P00, P01
Per 1 applicable pin
20
IOML(3)
Port 7, CF2
Per 1 applicable pin
7.5
IOAL(1)
Ports 0, 1,
Total of all applicable pins
70
Ports 2, 3, CF2
IOAL(2)
Port 7
Total of all applicable pins
Pd max(1)
QFP36(77)
Ta=40 to +85C
dissipation
15
120
Package only
Pd max(2)
mA
15
Ports 1, 2, 3
current
Power
Per 1 applicable pin
Ports 1, 2, 3
current
(Note 1-1)
P02 to P07,
3
25
P71 to P73
current
V
10
IOPH(2)
current
Peak output
Low level output current
Ports 0, 1, 2, 3
current
unit
Ta=40 to +85C
mW
Package with thermal
275
resistance board
(Note 1-2)
Operating ambient
Topr
40
+85
Tstg
55
+125
temperature
Storage ambient
C
temperature
Note 1-1: The mean output current is a mean value measured over 100ms.
Note 1-2: SEMI standards thermal resistance board (size: 76.1114.31.6tmm, glass epoxy) is used.
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed,
damage may occur and reliability may be affected.
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15
LC87FBH08A
Allowable Operating Conditions at Ta = 40C to +85C, VSS1 = VSS2 = 0V
Specification
Parameter
Symbol
Pin/Remarks
Conditions
VDD[V]
max
unit
5.5
VDD(2)
0.294s  tCYC  200s
2.2
5.5
VDD(3)
0.735s  tCYC  200s
1.8
5.5
supply voltage
Memory
typ
2.7
VDD(1)
(Note 2-1)
min
0.245s  tCYC  200s
Operating
VHD
VDD1
VDD1
sustaining
RAM and register contents sustained
in HOLD mode.
1.6
supply voltage
High level
VIH(1)
Ports 1, 2, 3, 7
1.8 to 5.5
0.3VDD+0.7
VDD
input voltage
VIH(2)
Ports 0
1.8 to 5.5
0.3VDD+0.7
VDD
VIH(3)
CF1, CF2, RES
1.8 to 5.5
0.75VDD
VDD
Low level
VIL(1)
Ports 1, 2, 3, 7
4.0 to 5.5
VSS
0.1VDD+0.4
1.8 to 4.0
VSS
0.2VDD
VIL(2)
Ports 0
4.0 to 5.5
VSS
0.15VDD+0.4
1.8 to 4.0
VSS
0.2VDD
VIL(3)
CF1, CF2, RES
1.8 to 5.5
VSS
0.25VDD
input voltage
High level
IOH(1)
Ports 0, 1, 2,
output current
IOH(2)
P71 to P73
Per 1 applicable pin
IOH(3)
IOH(4)
Ports 3,
Per 1 applicable pin
4.5 to 5.5
1.0
2.7 to 4.5
0.35
1.8 to 2.7
0.15
4.5 to 5.5
6.0
2.7 to 4.5
1.4
1.8 to 2.7
0.8
V
P05 (System clock
IOH(5)
IOH(6)
IOH(1)
output function
used)
4.5 to 5.5
25
IOH(2)
2.7 to 4.5
11.2
IOH(3)
1.8 to 2.7
5.4
Low level
IOL(1)
output current
IOL(2)
Ports 0, 1, 2, 3, 7
Ports 0, 1, 2, 3
Total of all applicable pins
Per 1 applicable pin
IOL(3)
IOL(4)
Port 7, CF2
Per 1 applicable pin
IOL(5)
IOL(6)
P00, P01
Per 1 applicable pin
0.8
2.7 to 5.5
1.4
1.8 to 2.7
0.8
25
4
IOL(8)
1.8 to 2.7
2
IOL(1)
Ports 0, 1, 2, 3,
IOL(2)
CF2
Total of all applicable pins
4.5 to 5.5
70
2.7 to 4.5
34.6
1.8 to 2.7
19.2
2.7 to 5.5
5.6
IOL(5)
1.8 to 2.7
3.2
tCYC
2.7 to 5.5
0.245
200
2.2 to 5.5
0.294
200
1.8 to 5.5
0.735
200
2.7 to 5.5
0.1
12
1.8 to 5.5
0.1
4
3.0 to 5.5
0.2
24.4
2.0 to 5.5
0.2
8
Ports 7
Total of all applicable pins
(Note 2-2)
frequency
1.8 to 2.7
2.7 to 4.5
cycle time
system clock
1.4
4.5 to 5.5
IOL(4)
External
10
2.7 to 4.5
IOL(7)
IOL(3)
Instruction
4.5 to 5.5
FEXCF
CF1
 CF2 pin open
 System clock frequency division
ratio=1/1
 External system clock duty=505%
 CF2 pin open
 System clock frequency division
ratio=1/2
 External system clock duty=505%
mA
s
MHz
Note 2-1: VDD must be held greater than or equal to 2.2V in the flash ROM onboard programming mode.
Note 2-2: Relationship between tCYC and oscillation frequency is 3/FmCF at a division ratio of 1/1 and 6/FmCF at a
division ratio of 1/2.
Continued on next page.
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16
LC87FBH08A
Continued from preceding page.
Specification
Parameter
Symbol
Pin/Remarks
Conditions
VDD[V]
Oscillation
FmCF(1)
CF1, CF2
See Fig. 1.
frequency
range
12MHz ceramic oscillation.
FmCF(2)
CF1, CF2
(Note 2-3)
10MHz ceramic oscillation.
See Fig. 1.
FmCF(3)
CF1, CF2
min
typ
max
2.7 to 5.5
12
2.2 to 5.5
10
1.8 to 5.5
4
2.2 to 5.5
4
unit
4MHz ceramic oscillation.
CF oscillation normal amplifier size selected.
(CFLAMP=0) See Fig. 1.
4MHz ceramic oscillation.
CF oscillation low amplifier size
selected. (CFLAMP=1)
MHz
See Fig. 1.
FmMRC(1)
Frequency variable RC oscillation.
(Note 2-4)
FmMRC(2)
1.8 to 5.5
7.84
8.0
8.16
1.8 to 5.5
7.88
8.0
8.12
Frequency variable RC oscillation.
 Ta=-10 to +85C
(Note 2-4)
FmRC
Internal medium-speed RC oscillation
1.8 to 5.5
0.5
1.0
2.0
FmSRC
Internal low-speed RC oscillation
1.8 to 5.5
50
100
200
FsX’tal
XT1, XT2
32.768kHz crystal oscillation
See Fig. 1.
Oscillation
tmsMRC
kHz
1.8 to 5.5
32.768
When Frequency variable RC
stabilization
oscillation state is switched from
time
stopped to enabled.
1.8 to 5.5
100
s
See Fig. 3.
Note 2-3: See Tables 1 and 2 for the oscillation constants.
Note 2-4: When switching the system clock, allow an oscillation stabilization time of 100s or longer after the
frequency variable RC oscillator circuit transmits from the "oscillation stopped" to "oscillation enabled" state.
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond the Recommended
Operating Ranges limits may affect device reliability.
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17
LC87FBH08A
Electrical Characteristics at Ta = 40C to +85C, VSS1 = VSS2 = 0V
Specification
Parameter
Symbol
Pin/Remarks
Conditions
VDD[V]
High level input
IIH(1)
current
Ports 0, 1, 2, 3,
Output disabled
Ports 7, RES
Pull-up resistor off
VIN=VDD
(Including output Tr's off leakage
min
typ
max
unit
1.8 to 5.5
1
1.8 to 5.5
1
1.8 to 5.5
15
A
V
current)
IIH(2)
CF1, CF2
Input port selected
VIN=VDD
IIH(3)
CF1
Reset state
VIN=VDD
Low level input
IIL(1)
current
Ports 0, 1, 2, 3,
Output disabled
Ports 7, RES
Pull-up resistor off
VIN=VSS
(Including output Tr's off leakage
1.8 to 5.5
1
1.8 to 5.5
1
current)
IIL(2)
CF1, CF2
Input port selected
VIN=VSS
High level output
VOH(1)
Ports 0, 1, 2
IOH=-1mA
4.5 to 5.5
VDD1
voltage
VOH(2)
P71 to P73
IOH=-0.35mA
2.7 to 5.5
VDD0.4
IOH=-0.15mA
1.8 to 5.5
VDD0.4
IOH=-6mA
4.5 to 5.5
VDD1
clock output
IOH=-1.4mA
2.7 to 5.5
VDD0.4
VOH(6)
function used)
IOH=-0.8mA
1.8 to 5.5
VDD0.4
Low level output
VOL(1)
Ports 0, 1, 2, 3
IOL=10mA
4.5 to 5.5
1.5
voltage
VOL(2)
IOL=1.4mA
2.7 to 5.5
0.4
IOL=0.8mA
1.8 to 5.5
0.4
IOL=1.4mA
2.7 to 5.5
0.4
IOL=0.8mA
1.8 to 5.5
0.4
IOL=25mA
4.5 to 5.5
1.5
VOL(7)
IOL=4mA
2.7 to 5.5
0.4
VOL(8)
IOL=2mA
1.8 to 5.5
0.4
VOH=0.9VDD
When Port 0 selected
4.5 to 5.5
15
35
80
low-impedance pull-up.
1.8 to 4.5
18
50
230
VOH=0.9VDD
When Port 0 selected
1.8 to 5.5
VOH(3)
VOH(4)
VOH(5)
Ports 3
P05 (System
VOL(3)
VOL(4)
Port 7, CF2
VOL(5)
VOL(6)
Pull-up resistance
Rpu(1)
Rpu(2)
Rpu(3)
P00, P01
Ports 0, 1, 2, 3,
Ports 7
Port 0
k
100
200
400
high-impedance pull-up.
Hysteresis voltage
Pin capacitance
VHYS(1)
Ports 1, 2, 3,
2.7 to 5.5
0.1VDD
VHYS(2)
Ports 7, RES
1.8 to 2.7
0.07VDD
CP
All pins
1.8 to 5.5
10
V
For pins other than that under test:
VIN=VSS
f=1MHz
pF
Ta=25C
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be
indicated by the Electrical Characteristics if operated under different conditions.
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18
LC87FBH08A
SIO0 Serial I/O Characteristics at Ta = 40C to +85C, VSS1 = VSS2 = 0V (Note 4-1-1)
Parameter
Symbol
Frequency
tSCK(1)
Low level
tSCKL(1)
Specification
Pin/
Conditions
Remarks
SCK0(P12)
VDD[V]
 See Fig. 5.
Input clock
tSCKH(1)
1.8 to 5.5
pulse width
tCYC
4
 See Fig. 5.
Output clock
(Note 4-1-2)
Frequency
tSCK(2)
Low level
tSCKL(2)
SCK0(P12)
 CMOS output selected
4/3
 See Fig. 5.
1/2
pulse width
tSCK
High level
tSCKH(2)
pulse width
tSCKHA(2)
 Continuous data
1/2
1.8 to 5.5
transmission/reception mode
tSCKH(2)
+2tCYC
 See Fig. 5.
Serial input
unit
1
 Continuous data
tSCKHA(1)
 CMOS output selected
Data setup time
tsDI(1)
SB0(P11),
SI0(P11)
Data hold time
 Must be specified with
respect to rising edge of
SIOCLK.
thDI(1)
Input clock
tdD0(1)
time
SO0(P10),
SB0(P11)
 Continuous data
(1/3)tCYC
transmission/reception mode
+0.08
s
 Synchronous 8-bit mode
1tCYC
1.8 to 5.5
Output clock
tCYC
tCYC
0.05
(Note 4-1-3)
tdD0(3)
+(10/3)
0.05
(Note 4-1-3)
tdD0(2)
tSCKH(2)
1.8 to 5.5
 See Fig. 5.
Output delay
Serial output
max
1
transmission/reception mode
Serial clock
typ
2
pulse width
High level
min
+0.08
(Note 4-1-3)
(1/3)tCYC
+0.08
Note 4-1-1: These specifications are theoretical values. Add margin depending on its use.
Note 4-1-2: To use serial-clock-input in continuous trans/rec mode, a time from SI0RUN being set when serial clock is
"H" to the first negative edge of the serial clock must be longer than tSCKHA.
Note 4-1-3: Must be specified with respect to falling edge of SIOCLK. Must be specified as the time to the beginning of
output state change in open drain output mode. See Fig. 5.
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19
LC87FBH08A
SIO1 Serial I/O Characteristics at Ta = 40C to +85C, VSS1 = VSS2 = 0V (Note 4-2-1)
Input clock
Symbol
Frequency
tSCK(3)
Low level
tSCKL(3)
Specification
Pin/
Conditions
Remarks
SCK1(P15)
VDD[V]
tSCK(4)
Low level
tCYC
SCK1(P15)
 CMOS output selected
2
 See Fig. 5.
tSCKL(4)
1/2
1.8 to 5.5
tSCK
tSCKH(4)
1/2
Serial input
pulse width
Data setup time
tsDI(2)
SI1(P14),
SB1(P14)
Data hold time
 Must be specified with
respect to rising edge of
SIOCLK.
thDI(2)
(1/3)tCYC
1.8 to 5.5
tdD0(4)
SO1(P13),
Serial output
SB1(P14)
+0.01
0.01
 See Fig. 5.
Output delay time
unit
1
pulse width
High level
max
1
1.8 to 5.5
tSCKH(3)
Frequency
typ
2
pulse width
High level
min
 See Fig. 5.
pulse width
Output clock
Serial clock
Parameter
 Must be specified with respect to
s
falling edge of SIOCLK.
 Must be specified as the time to
the beginning of output state
(1/2)tCYC
1.8 to 5.5
+0.05
change in open drain output
mode.
 See Fig. 5.
Note 4-2-1: These specifications are theoretical values. Add margin depending on its use.
Pulse Input Conditions at Ta = 40C to +85C, VSS1 = VSS2 = 0V
Specification
Parameter
Symbol
Pin/Remarks
Conditions
VDD[V]
High/low level
tPIH(1)
INT0(P70),
 Interrupt source flag can be set.
pulse width
tPIL(1)
INT1(P71),
 Event inputs for timer 0 or 1 are
INT2(P72),
enabled.
min
typ
1.8 to 5.5
1
1.8 to 5.5
2
1.8 to 5.5
64
1.8 to 5.5
256
1.8 to 5.5
200
max
unit
INT4(P20 to P21)
INT5(P30 to P31)
tPIH(2)
INT3(P73) when noise
 Interrupt source flag can be set.
tPIL(2)
filter time constant is
 Event inputs for timer 0 are
1/1
enabled.
tPIH(3)
INT3(P73) when noise
 Interrupt source flag can be set.
tPIL(3)
filter time constant is
 Event inputs for timer 0 are
1/32
nabled.
tPIH(4)
INT3(P73) when noise
 Interrupt source flag can be set.
tPIL(4)
filter time constant is
 Event inputs for timer 0 are
1/128
tPIL(5)
RES
tCYC
enabled.
 Resetting is enabled.
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20
s
LC87FBH08A
AD Converter Characteristics at VSS1 = VSS2 = 0V
<12bits AD Converter Mode at Ta = 40C to +85C >
Specification
Parameter
Symbol
Pin/Remarks
Resolution
N
AN0(P00) to
Absolute
ET
AN6(P06),
VDD[V]
1.8 to 5.5
(Note 6-1)
AN8(P70) to
accuracy
AN10(P72)
Conversion time
Conditions
TCAD
 See Conversion time calculation
formulas. (Note 6-2)
Analog input
VAIN
min
typ
max
unit
12
bit
2.7 to 5.5
16
1.8 to 5.5
20
2.7 to 5.5
32
115
2.2 to 5.5
134
215
1.8 to 5.5
400
430
VSS
VDD
1.8 to 5.5
voltage range
Analog port
IAINH
VAIN=VDD
1.8 to 5.5
input current
IAINL
VAIN=VSS
1.8 to 5.5
LSB
s
V
1
A
1
<8bits AD Converter Mode at Ta = 40C to +85C >
Specification
Parameter
Symbol
Pin/Remarks
Resolution
N
AN0(P00) to
Absolute
ET
AN6(P06),
VDD[V]
1.8 to 5.5
typ
max
TCAD
AN10(P72)
unit
8
bit
(Note 6-1)
1.8 to 5.5
 See Conversion time calculation
2.7 to 5.5
20
90
2.2 to 5.5
80
135
1.8 to 5.5
245
265
VSS
VDD
formulas. (Note 6-2)
Analog input
min
1.5
AN8(P70) to
accuracy
Conversion time
Conditions
VAIN
1.8 to 5.5
voltage range
Analog port
IAINH
VAIN=VDD
1.8 to 5.5
input current
IAINL
VAIN=VSS
1.8 to 5.5
LSB
1
1
s
V
A
Note 6-1: The quantization error (±1/2LSB) must be excluded from the absolute accuracy. The absolute accuracy must
be measured in the microcontroller's state in which no I/O operations occur at the pins adjacent to the analog
input channel.
Note 6-2: The conversion time refers to the period from the time an instruction for starting a conversion process till the
time the conversion results register(s) are loaded with a complete digital conversion value corresponding to
the analog input value.
The conversion time is 2 times the normal-time conversion time when:
The first AD conversion is performed in the 12-bit AD conversion mode after a system reset.
The first AD conversion is performed after the AD conversion mode is switched from 8-bit to 12-bit
conversion mode.
Conversion time calculation formulas:
12bits AD Converter Mode: TCAD(Conversion time) = ((52/(AD division ratio))+2)(1/3)tCYC
8bits AD Converter Mode: TCAD(Conversion time) = ((32/(AD division ratio))+2)(1/3)tCYC
External
Operating supply
oscillation
voltage range
(FmCF)
(VDD)
CF-12MHz
CF-8MHz
CF-4MHz
System division ratio
Cycle time
(SYSDIV)
(tCYC)
2.7V to 5.5V
1/1
2.7V to 5.5V
AD division
AD conversion time
(TCAD)
ratio
(ADDIV)
12bit AD
250ns
1/8
34.8s
21.5s
1/1
375ns
1/8
52.25s
32.25s
2.2V to 5.5V
1/1
375ns
1/32
208.25s
128.25s
2.7V to 5.5V
1/1
750ns
1/8
104.5s
64.5s
2.2V to 5.5V
1/1
750ns
1/16
208.5s
128.5s
1.8V to 5.5V
1/1
750ns
1/32
416.5s
256.5s
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21
8bit AD
LC87FBH08A
Reference voltage (VREF17) Characteristics at Ta = 40C to +85C, VSS1 = VSS2 = 0V
Parameter
Symbol
Output voltage
VOVREF
Reference voltage operation
IDDVREF
Pin/Remarks
Conditions
min
typ
1.67
2.0 to 5.5
current (Note 7-1)
Operation stabilization time
Specification
VDD[V]
2.0 to 5.5
tVRW
max
1.75
V
A
110
2.0 to 5.5
(Note 7-2)
unit
1.83
s
100
Note 7-1: IDDVREF denotes the currents that only flow to multivariable RC oscillator circuit’s reference voltage circuit.
Note 7-2: tVRW denotes the stabilization time from starting multivariable RC oscillator.
Power-on Reset (POR) Characteristics at Ta = 40C to +85C, VSS1 = VSS2 = 0V
Specification
Parameter
Symbol
Pin/Remarks
Conditions
Option selected
voltage
POR release
PORRL
voltage
Detection voltage
typ
max
 Select from option.
1.67V
1.55
1.66
1.77
(Note 8-1)
1.97V
1.85
1.96
2.07
2.07V
1.93
2.05
2.17
2.37V
2.23
2.35
2.47
2.57V
2.43
2.55
2.67
2.87V
2.71
2.85
2.99
3.86V
3.65
3.83
4.00
4.35V
4.12
4.32
4.50
0.7
0.95
 See Fig. 7.
POUKS
unknown state
Power supply rise
min
(Note 8-2)
 Power supply rise
PORIS
time
100
time from 0V to 1.6V.
unit
V
ms
Note8-1: The POR release level can be selected out of 8 levels only when the LVD reset function is disabled.
Note8-2: POR is in an unknown state before transistors start operation.
Low Voltage Detection Reset (LVD) Characteristics at Ta = 40C to +85C, VSS1 = VSS2 = 0V
Specification
Parameter
Symbol
Pin/Remarks
Conditions
Option selected
voltage
LVD reset voltage
LVDET
(Note 9-2)
LVD hysteresis width
Detection voltage
LVUKS
minimum width
max
1.91V
1.81
1.91
2.01
2.01V
1.90
2.00
2.10
(Note 9-3)
2.31V
2.20
2.30
2.40
 See Fig. 8.
2.51V
2.40
2.50
2.60
2.81V
2.68
2.80
2.92
3.79V
3.62
3.78
3.94
4.28V
4.09
4.27
4.45
1.91V
50
2.01V
50
2.31V
50
2.51V
50
2.81V
50
3.79V
50
4.28V
50
 See Fig. 8.
0.7
(Note 9-4)
TLVDW
typ
(Note 9-1)
LVHYS
unknown state
Low voltage detection
 Select from option.
min
unit
V
mV
0.95
V
 LVDET-0.5V
 See Fig. 9.
0.2
ms
(Reply sensitivity)
Note9-1: The LVD reset level can be selected out of 7 levels only when the LVD reset function is enabled.
Note9-2: LVD reset voltage specification values do not include hysteresis voltage.
Note9-3: LVD reset voltage may exceed its specification values when port output state changes and/or when a large
current flows through port.
Note9-4: LVD is in an unknown state before transistors start operation.
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22
LC87FBH08A
Consumption Current Characteristics at Ta = 40C to +85C, VSS1 = VSS2 = 0V
Parameter
Normal mode
Symbol
IDDOP(1)
Specification
Pin/
Conditions
Remarks
VDD1
VDD[V]
min
typ
max
unit
 FmCF=12MHz ceramic oscillation mode
consumption
 System clock set to 12MHz side
current
 Internal low speed and medium speed RC
2.7 to 5.5
5.1
9.3
2.7 to 3.6
3.1
5.6
3.0 to 5.5
5.2
10
3.0 to 3.6
3.3
6.2
2.2 to 5.5
4.4
8.4
2.2 to 3.6
2.8
5.5
1.8 to 5.5
2.3
5.3
1.8 to 3.6
1.6
3.0
2.2 to 5.5
0.97
2.4
2.2 to 3.6
0.55
1.2
1.8 to 5.5
0.44
1.5
1.8 to 3.6
0.28
0.80
1.8 to 5.5
3.4
5.5
1.8 to 3.6
2.4
4.6
1.8 to 5.5
51
163
1.8 to 3.6
38
103
5.0
51
136
3.3
38
99
2.5
36
94
oscillation stopped.
(Note 10-1)
 Frequency variable RC oscillation stopped.
(Note 10-2)
 1/1 frequency division ratio
IDDOP(2)
 CF1=24MHz external clock
 System clock set to CF1 side
 Internal low speed and medium speed RC
oscillation stopped.
 Frequency variable RC oscillation stopped.
 1/2 frequency division ratio
IDDOP(3)
 FmCF=10MHz ceramic oscillation mode
 System clock set to 10MHz side
 Internal low speed and medium speed RC
oscillation stopped.
 Frequency variable RC oscillation stopped.
 1/1 frequency division ratio
IDDOP(4)
 FmCF=4MHz ceramic oscillation mode
 System clock set to 4MHz side
 Internal low speed and medium speed RC
oscillation stopped.
 Frequency variable RC oscillation stopped.
mA
 1/1 frequency division ratio
IDDOP(5)
 CF oscillation low amplifier size selected.
(CFLAMP=1)
 FmCF=4MHz ceramic oscillation mode
 System clock set to 4MHz side
 Internal low speed and medium speed RC
oscillation stopped.
 Frequency variable RC oscillation stopped.
 1/4 frequency division ratio
IDDOP(6)
 FsX’tal=32.768kHz crystal oscillation mode
 Internal low speed RC oscillation stopped.
 System clock set to internal medium speed
RC oscillation.
 Frequency variable RC oscillation stopped.
 1/2 frequency division ratio
IDDOP(7)
 FsX’tal=32.768kHz crystal oscillation mode
 Internal low speed and medium speed RC
oscillation stopped.
 System clock set to 8MHz with
frequency variable RC oscillation
 1/1 frequency division ratio
IDDOP(8)
 External FsX’tal and FmCF oscillation stopped.
 System clock set to internal low speed RC
oscillation.
 Internal medium speed RC oscillation stopped.
 Frequency variable RC oscillation stopped.
 1/1 frequency division ratio
IDDOP(9)
A
 External FsX’tal and FmCF oscillation stopped.
 System clock set to internal low speed RC
oscillation.
 Internal medium speed RC oscillation stopped.
 Frequency variable RC oscillation stopped.
 1/1 frequency division ratio
 Ta=-10 to +50C
Note10-1: Values of the consumption current do not include current that flows into the output transistors and internal
pull-up resistors.
Note10-2: The consumption current values do not include operational current of LVD function if not specified.
Continued on next page.
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23
LC87FBH08A
Continued from preceding page.
Parameter
Normal mode
Symbol
IDDOP(10)
Specification
Pin/
Conditions
Remarks
VDD1
VDD[V]
min
typ
max
unit
 FsX’tal=32.768kHz crystal oscillation mode
consumption
 System clock set to 32.768kHz side
current
 Internal low speed and medium speed RC
1.8 to 5.5
34
97
1.8 to 3.6
14
44
5.0
34
88
3.3
14
36
2.5
9.1
22
2.7 to 5.5
2.6
4.8
2.7 to 3.6
1.4
2.4
3.0 to 5.5
2.7
5.3
3.0 to 3.6
1.6
2.9
2.2 to 5.5
2.2
4.3
2.2 to 3.6
1.2
2.2
1.8 to 5.5
1.3
3.3
1.8 to 3.6
0.56
1.2
2.2 to 5.5
0.74
1.8
2.2 to 3.6
0.34
0.68
1.8 to 5.5
0.32
0.90
1.8 to 3.6
0.21
0.44
oscillation stopped.
(Note 10-1)
 Frequency variable RC oscillation stopped.
(Note 10-2)
 1/2 frequency division ratio
IDDOP(11)
A
 FsX’tal=32.768kHz crystal oscillation mode
 System clock set to 32.768kHz side
 Internal low speed and medium speed RC
oscillation stopped.
 Frequency variable RC oscillation stopped.
 1/2 frequency division ratio
 Ta=-10 to +50C
HALT mode
IDDHALT(1)
 HALT mode
consumption
 FmCF=12MHz ceramic oscillation mode
current
 System clock set to 12MHz side
(Note 10-1)
 Internal low speed and medium speed RC
(Note 10-2)
oscillation stopped.
 Frequency variable RC oscillation stopped.
 1/1 frequency division ratio
IDDHALT(2)
 HALT mode
 CF1=24MHz external clock
 System clock set to CF1 side
 Internal low speed and medium speed RC
oscillation stopped.
 Frequency variable RC oscillation stopped.
 1/2 frequency division ratio
IDDHALT(3)
 HALT mode
 FmCF=10MHz ceramic oscillation mode
 System clock set to 10MHz side
 Internal low speed and medium speed RC
oscillation stopped.
 Frequency variable RC oscillation stopped.
 1/1 frequency division ratio
IDDHALT(4)
 HALT mode
 FmCF=4MHz ceramic oscillation mode
 System clock set to 4MHz side
mA
 Internal low speed and medium speed RC
oscillation stopped.
 Frequency variable RC oscillation stopped.
 1/1 frequency division ratio
IDDHALT(5)
 HALT mode
 CF oscillation low amplifier size selected.
(CFLAMP=1)
 FmCF=4MHz ceramic oscillation mode
 System clock set to 4MHz side
 Internal low speed and medium speed RC
oscillation stopped.
 Frequency variable RC oscillation stopped.
 1/4 frequency division ratio
IDDHALT(6)
 HALT mode
 FsX’tal=32.768kHz crystal oscillation mode
 Internal low speed RC oscillation stopped.
 System clock set to internal medium speed
RC oscillation
 Frequency variable RC oscillation stopped.
 1/2 frequency division ratio
Note10-1: Values of the consumption current do not include current that flows into the output transistors and internal
pull-up resistors.
Note10-2: The consumption current values do not include operational current of LVD function if not specified.
Continued on next page.
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24
LC87FBH08A
Continued from preceding page.
Parameter
HALT mode
Symbol
IDDHALT(7)
Specification
Pin/
Conditions
remarks
VDD1
VDD[V]
min
typ
max
consumption
 FsX’tal=32.768kHz crystal oscillation mode
current
 Internal low speed and medium speed RC
1.8 to 5.5
1.3
2.3
mA
oscillation stopped.
(Note 10-1)
unit
 HALT mode
 System clock set to 8MHz with
(Note 10-2)
frequency variable RC oscillation
1.8 to 3.6
0.91
1.5
1.8 to 5.5
18
68
1.8 to 3.6
11
35
5.0
18
46
3.3
11
27
2.5
7.4
19
1.8 to 5.5
24
98
1.8 to 3.6
8.0
35
5.0
24
63
 1/1 frequency division ratio
IDDHALT(8)
 HALT mode
 External FsX’tal and FmCF oscillation stopped.
 System clock set to internal low speed RC
oscillation.
 Internal medium speed RC oscillation stopped.
 Frequency variable RC oscillation stopped.
 1/1 frequency division ratio
IDDHALT(9)
 HALT mode
 External FsX’tal and FmCF oscillation stopped.
 System clock set to internal low speed RC
oscillation.
 Internal medium speed RC oscillation stopped.
 Frequency variable RC oscillation stopped.
 1/1 frequency division ratio
 Ta=-10 to +50C
IDDHALT(10)
 HALT mode
 FsX’tal=32.768kHz crystal oscillation mode
 System clock set to 32.768kHz side
 Internal low speed and medium speed RC
oscillation stopped.
 Frequency variable RC oscillation stopped.
 1/2 frequency division ratio
IDDHALT(11)
 HALT mode
 FsX’tal=32.768kHz crystal oscillation mode
 System clock set to 32.768kHz side
A
 Internal low speed and medium speed RC
oscillation stopped.
3.3
8.0
23
2.5
3.5
11
23
 Frequency variable RC oscillation stopped.
 1/2 frequency division ratio
 Ta=-10 to +50C
HOLD mode
IDDHOLD(1)
consumption
current
(Note 10-1)
IDDHOLD(2)
(Note 10-2)
HOLD mode
1.8 to 5.5
0.019
 CF1=VDD or open (External clock mode)
1.8 to 3.6
0.011
11
HOLD mode
5.0
0.019
1.2
 CF1=VDD or open (External clock mode)
3.3
0.011
0.59
2.5
0.010
0.30
1.8 to 5.5
2.6
26
1.8 to 3.6
2.0
13
5.0
2.6
3.8
 Ta=-10 to +50C
3.3
2.0
2.8
 LVD option selected
2.5
1.7
2.5
 Ta=-10 to +50C
IDDHOLD(3)
HOLD mode
 CF1=VDD or open (External clock mode)
 LVD option selected
IDDHOLD(4)
HOLD mode
 CF1=VDD or open (External clock mode)
Timer HOLD
IDDHOLD(5)
mode
consumption
current
(Note 10-1)
(Note 10-2)
IDDHOLD(6)
Timer HOLD mode
1.8 to 5.5
22
84
 FsX’tal=32.768kHz crystal oscillation mode
1.8 to 3.6
6.5
30
5.0
22
53
3.3
6.5
16
2.5
2.7
7.2
Timer HOLD mode
 FsX’tal=32.768kHz crystal oscillation mode
 Ta=-10 to +50C
Note10-1: Values of the consumption current do not include current that flows into the output transistors and internal
pull-up resistors.
Note10-2: The consumption current values do not include operational current of LVD function if not specified.
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25
LC87FBH08A
F-ROM Programming Characteristics at Ta = +10C to +55C, VSS1 = VSS2 = 0V
Specification
Parameter
Symbol
Pin/Remarks
Conditions
VDD[V]
Onboard
IDDFW(1)
VDD1
min
typ
max
unit
 Only current of the Flash block.
programming
2.2 to 5.5
5
10
mA
20
30
ms
40
60
s
current
Programming
tFW(1)
 Erasing time
time
tFW(2)
 Programming time
2.2 to 5.5
UART (Full Duplex) Operating Conditions at Ta = 40C to +85C, VSS1 = VSS2 = 0V
Specification
Parameter
Symbol
Pin/Remarks
Conditions
VDD[V]
Transfer rate
UBR
P20, P21
1.8 to 5.5
min
typ
max
16/3
8192/3
Data length: 7/8/9 bits (LSB first)
Stop bits:
1 bit (2-bit in continuous data transmission)
Parity bits: None
Example of Continuous 8-bit Data Transmission Mode Processing (First Transmit Data=55H)
Start bit
Start of
transmission
Stop bit
Transmit data (LSB first)
End of
transmission
UBR
Example of Continuous 8-bit Data Reception Mode Processing (First Receive Data=55H)
Stop bit
Start bit
Start of
reception
Receive data (LSB first)
UBR
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26
End of
reception
unit
tCYC
LC87FBH08A
Characteristics of a Sample Main System Clock Oscillation Circuit
Given below are the characteristics of a sample main system clock oscillation circuit that are measured using a Our
designated oscillation characteristics evaluation board and external components with circuit constant values with
which the oscillator vendor confirmed normal and stable oscillation.
Table 1 Characteristics of a Sample Main System Clock Oscillator Circuit with a Ceramic Oscillator
 CF oscillation normal amplifier size selected (CFLAMP=0)
MURATA
Nominal
Frequency
12MHz
Circuit Constant
Operating
Oscillation
Voltage
Stabilization Time
Type
Oscillator Name
SMD
CSTCE12M0G52-R0
SMD
CSTCE10M0G52-R0
(10)
(10)
Open
680
2.1 to 5.5
0.02
0.3
CSTLS10M0G53-B0
(15)
(15)
Open
680
2.4 to 5.5
0.02
0.3
CSTLS10M0G53095-B0
(15)
(15)
Open
680
2.0 to 5.5
0.01
0.15
10MHz
C1
C2
Rf
Rd
Range
typ
max
[pF]
[pF]
[]
[]
[V]
[ms]
[ms]
(10)
(10)
Open
680
2.6 to 5.5
0.02
0.3
Remarks
LEAD
SMD
CSTCE8M00G52-R0
(10)
(10)
Open
1k
2.1 to 5.5
0.02
0.3
CSTLS8M00G53-B0
(15)
(15)
Open
1k
2.2 to 5.5
0.02
0.3
CSTLS8M00G53095-B0
(15)
(15)
Open
1k
1.9 to 5.5
0.01
0.15
CSTCR6M00G53-R0
(15)
(15)
Open
1.5k
2.0 to 5.5
0.02
0.3
CSTCR6M00G53093-R0
(15)
(15)
Open
1.5k
1.8 to 5.5
0.01
0.15
CSTLS6M00G53-B0
(15)
(15)
Open
1.5k
2.0 to 5.5
0.02
0.3
CSTLS6M00G53095-B0
(15)
(15)
Open
1.5k
1.8 to 5.5
0.01
0.15
SMD
CSTCR4M00G53-R0
(15)
(15)
Open
1.5k
1.8 to 5.5
0.03
0.45
LEAD
CSTLS4M00G53-B0
(15)
(15)
Open
1.5k
1.8 to 5.5
0.02
0.3
8MHz
LEAD
Internal
C1, C2
SMD
6MHz
LEAD
4MHz
 CF oscillation low amplifier size selected (CFLAMP=1)
MURATA
Nominal
Frequency
12MHz
Circuit Constant
Operating
Oscillation
Voltage
Stabilization Time
Type
Oscillator Name
[pF]
[pF]
[]
[]
[V]
[ms]
[ms]
SMD
CSTCE12M0G52-R0
(10)
(10)
Open
470
3.9 to 5.5
0.03
0.45
SMD
CSTCE10M0G52-R0
(10)
(10)
Open
470
2.9 to 5.5
0.03
0.45
0.45
10MHz
C1
C2
Rf
Rd
Range
typ
max
CSTLS10M0G53-B0
(15)
(15)
Open
470
3.6 to 5.5
0.03
CSTLS10M0G53095-B0
(15)
(15)
Open
470
2.7 to 5.5
0.02
0.3
CSTCE8M00G52-R0
(10)
(10)
Open
680
2.7 to 5.5
0.03
0.45
Remarks
LEAD
SMD
8MHz
CSTLS8M00G53-B0
(15)
(15)
Open
680
3.0 to 5.5
0.03
0.45
CSTLS8M00G53095-B0
(15)
(15)
Open
680
2.5 to 5.5
0.01
0.15
CSTCR6M00G53-R0
(15)
(15)
Open
1k
2.6 to 5.5
0.03
0.45
CSTCR6M00G53095-R0
(15)
(15)
Open
1k
2.2 to 5.5
0.02
0.3
CSTLS6M00G53-B0
(15)
(15)
Open
1k
2.7 to 5.5
0.03
0.45
CSTLS6M00G53095-B0
(15)
(15)
Open
1k
2.2 to 5.5
0.01
0.15
LEAD
SMD
Internal
C1, C2
6MHz
LEAD
CSTCR4M00G53-R0
(15)
(15)
Open
1k
2.1 to 5.5
0.04
0.6
CSTCR4M00G53095-R0
(15)
(15)
Open
1k
1.8 to 5.5
0.02
0.3
CSTLS4M00G53-B0
(15)
(15)
Open
1k
2.1 to 5.5
0.02
0.3
CSTLS4M00G53095-B0
(15)
(15)
Open
1k
1.8 to 5.5
0.01
0.15
SMD
4MHz
LEAD
The oscillation stabilization time refers to the time interval that is required for the oscillation to get stabilized in
follwing cases (see Figure 3).
 The time interval that is required for the oscillation to get stabilized after the instruction for starting the mainclock
oscillation circuit is executed.
 The time interval that is required for the oscillation to get stabilized after the HOLD mode is reset and oscillation is
started.
 The time interval that is required for the oscillation to get stabilized after the X’tal Hold mode, under the state which
the main clock oscillation is enabled, is reset and oscillation is started.
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27
LC87FBH08A
Characteristics of a Sample Subsystem Clock Oscillator Circuit
Given below are the characteristics of a sample subsystem clock oscillation circuit that are measured using a our
designated oscillation characteristics evaluation board and external components with circuit constant values with which
the oscillator vendor confirmed normal and stable oscillation.
Table 2 Characteristics of a Sample Subsystem Clock Oscillator Circuit with a Crystal Oscillator
EPSON TOYOCOM
Nominal
Type
Frequency
32.768kHz
SMD
Circuit Constant
Oscillator
Name
MC-306
Operating
Oscillation
Voltage
Stabilization Time
C1
C2
Rf
Rd
Range
typ
max
[pF]
[pF]
[]
[]
[V]
[s]
[s]
9
9
Open
330k
1.8 to 5.5
1.4
4.0
Remarks
Applicable CL value =
7.0pF
SEIKO INSTRUMENTS
Nominal
Type
Frequency
32.768kHz
SMD
Circuit Constant
Oscillator
Name
SSP-T7-F
Operating
Oscillation
Voltage
Stabilization Time
C1
C2
Rf
Rd
Range
typ
max
[pF]
[pF]
[]
[]
[V]
[s]
[s]
18
22
Open
330k
1.8 to 5.5
0.75
2.0
Remarks
Applicable CL value =
12.5pF
The oscillation stabilization time refers to the time interval that is required for the oscillation to get stabilized after VDD
goes above the operating voltage lower limit (see Figure 3).
 The time interval that is required for the oscillation to get stabilized after the instruction for starting the subclock
oscillation circuit is executed.
 The time interval that is required for the oscillation to get stabilized after the Hold mode, under the state which
the subclock oscillation is enabled, is reset and oscillation is started.
(Notes on the implementation of the oscillator circuit)
 Oscillation is influenced by the circuit pattern layout of printed circuit board. Place the oscillation-related
components as close to the CPU chip and to each other as possible with the shortest possible pattern length.
 Keep the signal lines whose state changes suddenly or in which large current flows as far away from the oscillator
circuit as possible and make sure that they do not cross one another.
 Be sure to insert a current limiting resistor (Rd) so that the oscillation amplitude never exceeds the input voltage
level that is specified as the absolute maximum rating.
 The oscillator circuit constants shown above are sample characteristic values that are measured using the Our
designated oscillation evaluation board. Since the accuracy of the oscillation frequency and other characteristics vary
according to the board on which the IC is installed, it is recommended that the user consult the resonator vendor for
oscillation evaluation of the IC on a user's production board when using the IC for applications that require high
oscillation accuracy. For further information, contact your resonator vendor or Our company sales representative
serving your locality.
 It must be noted, when replacing the flash ROM version of a microcontroller with a mask ROM version, that their
operating voltage ranges may differ even when the oscillation constant of the external oscillator is the same.
CF2/XT2
CF1/XT1
Rf
Rd
C1
CF/X’tal
0.5VDD
C2
Figure 1 CF and XT Oscillator Circuit
Figure 2 AC Timing Measurement Point
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28
LC87FBH08A
VDD
Operating VDD
lower limit
0V
Power supply
Reset time
RES
Internal medium speed
RC oscillation
tmsCF/tmsXtal
CF1/XT1
CF2/XT2
tmsMRC
Frequency variable
RC oscillation
Instruction for enabling oscillation
executed
Operating
mode
Unpredictable
Reset
Instruction execution
Reset Time and Oscillation Stabilization Time
HOLD reset
signal
HOLD reset signal absent
HOLD reset signal valid
HALT reset signal valid
Internal medium speed
RC oscillation or
low speed RC oscillation
tmsCF/tmsXtal
CF1/XT1,
CF2/XT2
(Note)
tmsMRC
Frequency variable
RC oscillation
Instruction for enabling oscillation
executed
State
HOLD
HALT
Instruction execution
HOLD Reset Signal and Oscillation Stabilization Time
Note: External oscillation circuit is selected.
Figure 3 Oscillation Stabilization Times
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29
LC87FBH08A
VDD
Note:
External circuits for reset may vary
depending on the usage of POR and LVD.
Please refer to the user’s manual for more
information.
RRES
RES
CRES
Figure 4 Reset Circuit
SIOCLK:
DATAIN:
DI0
DI1
DI2
DI3
DI4
DI5
DI6
DATAOUT:
DO0
DO1
DO2
DO3
DO4
DO5
DO6
DI7
DI8
DO7
DO8
Data RAM transfer
period (SIO0 only)
tSCK
tSCKL
tSCKH
SIOCLK:
thDI
tsDI
DATAIN:
tdDO
DATAOUT:
Data RAM transfer
period (SIO0 only)
tSCKHA
tSCKL
SIOCLK:
tsDI
thDI
DATAIN:
tdDO
DATAOUT:
Figure 5 Serial I/O Output Waveforms
tPIL
tPIH
Figure 6 Pulse Input Timing Signal Waveform
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30
LC87FBH08A
(a)
POR release voltage
(PORRL)
(b)
VDD
Reset period
100s or longer
Reset period
Unknown-state
(POUKS)
RES
Figure 7 Waveform observed when only POR is used (LVD not used)
(RESET pin: Pull-up resistor RRES only)
 The POR function generates a reset only when power is turned on starting at the VSS level.
 No stable reset will be generated if power is turned on again when the power level does not go down to the VSS level
as shown in (a). If such a case is anticipated, use the LVD function together with the POR function or implement an
external reset circuit.
 A reset is generated only when the power level goes down to the VSS level as shown in (b) and power is turned on
again after this condition continues for 100s or longer.
LVD hysteresis width
(LVHYS)
LVD release voltage
(LVDET+LVHYS)
VDD
LVD reset voltage
(LVDET)
Reset period
Reset period
Reset period
Unknown-state
(LVUKS)
RES
Figure 8 Waveform observed when both POR and LVD functions are used
(RESET pin: Pull-up resistor RRES only)
 Resets are generated both when power is turned on and when the power level lowers.
 A hysteresis width (LVHYS) is provided to prevent the repetitions of reset release and entry cycles near the detection
level.
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31
LC87FBH08A
VDD
LVD release voltage
LVD reset voltage
LVDET-0.5V
TLVDW
VSS
Figure 9 Low voltage detection minimum width
(Example of momentary power loss/Voltage variation waveform)
ORDERING INFORMATION
Package
Shipping (Qty / Packing)
LC87FBH08AU-EB-3H
Device
LQFP36 7x7 / QFP36
(Pb-Free / Halogen Free)
500 / Tray Foam
LC87FBH08AU-EB-NH
LQFP36 7x7 / QFP36
(Pb-Free / Halogen Free)
1000 / Tape & Reel
† For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel
Packaging Specifications Brochure, BRD8011/D. http://www.onsemi.com/pub_link/Collateral/BRD8011-D.PDF
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