SII S-7760A73XX-HCT1

Rev.1.3_00
PROGRAMMABLE PORT CONTROLLER
(PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
S-7760A
The S-7760A is a programmable port controller IC comprised of an
E2PROM, a control circuit for data output, a circuit to prevent
malfunction caused by low power supply voltage and others.
This IC operates at 400 kHz and interfaces with exteriors via
I2C-bus, controls an 8ch digital output with a serial signal.
Among the digital output ports of 8 channels, the lower 4 channels
have a timer function so that at each port, users are able to set the
default value and inverted delay time. In the higher 4 channels,
setting the fixed output is available at each port. The default value
is maintained despite power-off because this IC has an E2PROM.
The S-7760A is able to be used to control ON/OFF for the chips
surrounding MPU and to output the default data that devices
fundamentally have.
„ Features
•
•
•
•
Operating voltage range:
8ch digital output:
Operating frequency of I2C-bus interface:
Low current consumption at standby:
2.3 to 4.5 V
Higher 4 channels; fixed output/lower 4 channels; timer action
400 kHz
3.0 µA Max. (VCCH = 4.5 V CMOS input type)
10.0 µA Max. (VCCH = 4.5 V low voltage input type)
6-byte
105 cycles / word*1 (at −40 to +85 °C)
10 years (after rewriting 105 cycles / word)
• Built-in E2PROM circuit:
2
• E PROM endurance:
2
• E PROM data retention:
• Function to protect write in E2PROM
• Function to prevent malfunction during low power supply voltage operation
• Lead-free product
• Small package:
WLP-16A, 16-Pin TSSOP (Under development)
*1. For each address (Word: 8 bits)
„ Application
•
•
•
•
Mobile phone
Portable communication device
Digital still camera
Digital video camera
„ Package
Package Name
Drawing Code
Package
Tape
Reel
WLP-16A
HA016-A
HA016-A
HA016-A
16-Pin TSSOP*1
FT016-A
FT016-A
FT016-A
*1. Under development
Seiko Instruments Inc.
1
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Pin Configuration
16-Pin TSSOP*1
Top View
WLP-16
Bottom View
SCL
A1
A2
A3
A4
CLK or BPDX
SCL
WP
VCCH
B1
B2
B3
B4
DO7
VSS
SDA
DO0
C1
C2
C3
C4
DO6 TIMEN or RESX DO3
D2
D3
D4
DO5
DO4
VCCL
DO2
SDA
WP
VSS
CLK
or BPDX
DO7
DO1
D1
16
1
VCCH
DO0
DO6
DO1
DO5
DO2
DO4
TIMEN
or RESX
DO3
8
9
VCCL
（1.93×2.07×0.6 max.）
Figure 1
Figure 2
*1. Under development
„ List of Pin
Table 1 WLP-16A List of Pin
Pin No.
Pin name
Description
Pin No.
Pin name
Description
CLK
Input for external clock
1
SCL
Input for serial clock
A1
BPDX
Input for bus pull-down bar
2
VSS
GND
A2
SCL
Input for serial clock
CLK
Input
for external clock
*1
3
BPDX
Input for bus pull-down bar
A3
WP
Input for Write protect
A4
VCCH
Power supply
4
DO7
Output port 7
B1
DO7
Output port 7
5
DO6
Output port 6
B2
VSS
GND
6
DO5
Output port 5
B3
SDA
Serial data I/O
7
DO4
Output port 4
B4
DO0
Output port 0
TIMEN
Input
for timer enable
*2
8
RESX
Input for reset bar
C1
DO6
Output port 6
TIMEN
Input for timer enable
9
VCCL
Power supply for output port
*2
C2
RESX
Input for reset bar
10
DO3
Output port 3
C3
DO3
Output port 3
11
DO2
Output port 2
C4
DO1
Output port 1
12
DO1
Output port 1
D1
DO5
Output port 5
13
DO0
Output port 0
D2
DO4
Output port 4
14
VCCH
Power supply
D3
VCCL
Power supply for output port
15
WP
Input for Write protect
D4
DO2
Output port 2
16
SDA
Serial data I/O
Whether to set A1 in CLK or BPDX is selectable by option (Pin number is 3 for TSSOP).
Whether to set C2 in TIMEN or RESX is selectable by option (Pin number is 8 for TSSOP).
*1
*1.
*2.
2
Table 2 16-Pin TSSOP List of Pin
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Block Diagram
VCCL
VCCH
VCCH
VCCL
2
E PROM
8 bit × 6
WP
SDA
SCL
Interface
Circuit
Decode Logic
for Data Register
Mode
Control Circuit for
Data Output
(Fixed Output)
Control Port Register
DO7
DO6
DO5
DO4
DO3
TIMEN
(Timer Action)
or RESX
DO2
DO1
DO0
Timer Scale Setting
Register
Timer Setting
Register
Circuit for Prevention
Malfunction by Low
Voltage
Timer Enable
Register
VSS
Decoder
Dividing
Circuit
Oscillation
Circuit
CLK
or BPDX
Figure 3
Seiko Instruments Inc.
3
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ General Description of Pin Function
1. SDA (Serial data I/O) pin
The SDA pin transmits serial data bi-directionally, is comprised of a signal input pin and a pin with Nch transistor open
drain output. In use, generally, connect the SDA line to any other device which has the open-drain or open-collector
output with Wired-OR connection by pulling up to VCCH by a resistor.
2. SCL (Input for serial clock) pin
The SCL pin is an input pin for serial clock, processes a signal at a rising/falling edge of SCL clock. Pay attention fully
to the rising/falling time and comply with specifications.
3. WP (Input for Write protect) pin
This pin performs Write Protect to E2PROM (This pin does not have a function for Write protect to the register).
Set the WP pin in VCCH when using the Write Protect function. If not, set the WP pin to GND.
4. TIMEN (Input for timer enable)/RESX (Input for reset bar) pin
Select TIMEN or RESX by option.
The TIMEN pin controls enable (“H”)/disable (“L”)/Start (“L”→”H”) in the timer action (inversion of digital output due to
elapsed period). Refer to the description of related register in “„ Command” and “„ Condition to Start Timer”
regarding details of timer action.
The RESX pin has the negative logic, is a pin to reset. This pin initializes the circuit with “L” input, and performs its
regular action (the status of reset release) by inputting “H”. This pin goes in its reload action immediately after
releasing reset, thus by initializing, the value of related register is reloaded to the data that E2PROM has. If a user
selects the RESX pin, the TIMEN pin’s function will be invalid so that the internal signal of TIMEN is fixed in “L”.
5. CLK (Clock input)/BPDX (Input for bus pull-down bar) pin
As for primary clock for circuits, users can select either from the internal oscillation circuit or input it externally by
option. In case of using an external clock input, this pin works as the CLK pin to input clock by itself. In case of using
an internal oscillation circuit, users can set this pin as the BPDX pin by option. With “L” input from the BPDX pin, SDA
and SCL in I2C-bus interface are forcibly pulled-down. This pin performs its regular action by inputting “H”. Users also
can select the setting which does not have an internal oscillation circuit or bus pull-down for this pin.
6. DO0, DO1, DO2, DO3 (Digital output) pin
These are lower 4 channels in the digital output ports. Their default values are equal to the ones of a control port
register during output. These lower 4 channels are for timer action. Its output inverts after; the timer starts and delay
time has elapsed.
7. DO4, DO5, DO6, DO7 (Digital output) pin
These are the higher 4 channels in the digital output ports. Their default values are equal to the ones of a control port
register during output. These higher 4 channels have fixed output. The elapsed period does not make outputs
inverted.
8. VSS pin
Connect to GND.
9. VCCH pin
Except for the output ports, the power supply is applied to the entire circuit via this pin. Regarding the voltage’s value
to be applied to this pin, refer to “„ Recommended Operating Conditions”.
10. VCCL pin
This pin is to apply the power supply for the output ports. Regarding the voltage’s value to be applied to this pin, refer
to “„ Recommended Operating Conditions”.
4
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Equivalent Circuit of I/O Pin
This IC’s I/O pin does not have an element of pull-up or pull-down. The SDA line has an open drain output. The followings
are equivalent circuits.
TIMEN, CLK
Figure 4 TIMEN, CLK Pin
SCL
Figure 5 SCL Pin (When selecting CLK option)
SCL
Open drain output
Figure 6 SCL Pin (When selecting BPDX option)
SDA
Open drain output
Figure 7 SDA Pin
Seiko Instruments Inc.
5
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
WP
Figure 8 WP Pin
VCCL
VCCL
DO
Figure 9 DO Pin
„ Option Regarding High/Low Leveled Input Voltage for Pin
For the SDA, SCL and TIMEN pins, the two types of high/low leveled input voltage are selectable by option.
1. CMOS input type
The high/low leveled input voltage varies according to the power supply voltage.
The value is defined by the rate for power supply voltage as; VIH ≥ 0.7 × VCCH by high leveled input voltage, VIL ≤ 0.3 ×
VCCH by low leveled input voltage.
2. Low voltage input type
This option is effective when the power supply voltage at MPU is lower than the one of the S-7760A.
If using this option, setting a level-shifter for an interface signal is unnecessary.
Independent of the power supply voltage, the high/low leveled input voltage is constant, moreover, the value is also
constant unlike the definition by the rate as; VIH ≥ 1.5 V by high leveled input voltage, VIL ≤ 0.3 V by low leveled input
voltage.
The TIMEN pin is able to set as the RESX pin by option, however, also in this case the types regarding high/low leveled
input voltage are selectable.
6
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Absolute Maximum Ratings
Table 3
Item
Symbol
Rating
Unit
Power supply voltage1
VCCH
−0.3 to +7.0
V
Power supply voltage2
VCCL
−0.3 to VCCH
V
Input voltage
VIN
−0.3 to VCCH+0.3
V
Output voltage (SDA)
VOUT1
−0.3 to VCCH
V
Output voltage (DO)
VOUT2
−0.3 to VCCL
V
Operating ambient temperature
Topr
−40 to +85
°C
Storage temperature
Tstg
−65 to +150
°C
Caution
The absolute maximum ratings are rated values exceeding which
the product could suffer physical damage. These values must
therefore not be exceeded under any conditions.
„ Recommended Operating Conditions
Table 4
Item
Supply voltage 1
Output supply voltage 2
High-level input voltage 1
Low-level input voltage 1
Symbol
Applicable Pin
VCCH
VCCH
VCCL
VCCL
VIH1
WP, CLK
VIL1
High-level input voltage 2
VIH2
SDA, SCL, TIMEN
Low-level input voltage 2
VIL2
Option
−
−
−
−
CMOS input type
Low voltage input type
CMOS input type
Low voltage input type
Min.
2.3 *1
1.5
0.7 × VCCH
0.0
0.7 × VCCH
1.5
0.0
0.0
Typ.
−
−
−
−
−
−
−
−
Max.
4.5
VCCH *2
VCCH
0.3 × VCCH
VCCH
VCCH
0.3 × VCCH
0.3
Unit
V
V
V
V
V
V
V
V
*1. Set VCCH ≥ 2.5 V when rising VCCH and TIMEN simultaneously.
*2. Set the voltage of VCCL as VCCH ≥ VCCL.
„ Pin Capacitance
Table 5
Item
Symbol
Input capacitance
CIN
Input/output capacitance
CI/O
Pin
(Ta = 25 °C, f = 1.0 MHz, VCCH = 3 V)
Min.
Typ.
Max.
Unit
Condition
SCL, WP,
TIMEN, CLK
SDA
VIN = 0 V
−
−
10
pF
VI/O = 0 V
−
−
10
pF
„ Endurance
Table 6
Item
Endurance
Symbol Operating Temperature
NW
−40 to +85 °C
Min.
Typ.
Max.
Unit
105
−
−
cycles / word
Seiko Instruments Inc.
7
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ DC Electrical Characteristics
Table 7 DC Characteristcs 1
Item
Symbol
Condition *1
Option
VCCH = VCCL = 2.3 to 4.5 V
Min.
Typ.
Max.
Current consumption
CMOS input
fSCL = 0 Hz
ISB
−
during standby
type
Current consumption
Low voltage
fSCL = 0 Hz
ISB
−
during standby
input type
Current consumption
fSCL = 400 kHz
−
−
ICC1
(READ)
Current consumption
fSCL = 400 kHz
−
−
ICC2
(WRITE)
Current consumption during
operation of internal
ICC3
fSCL = 0 Hz
−
−
oscillation circuit
*1. The total current consumption when VCCH = VCCL. No load on pins DO7 to 0.
Unit
−
3.0
µA
−
10.0
µA
−
0.8
mA
−
4.0
mA
−
0.8
mA
Table 8 DC Characteristcs 2
Item
Input current
Symbol
IIH1
ILI1
Output leakage current
Pin
CLK, TIMEN,
WP, SDA, SCL
ILO1
SDA
VOL1
SDA
VOL2
VOH2
Low-level output voltage *1 VOL3
*1.
8
VCCH = 2.3 to 4.5 V
Min.
Typ.
Max.
Unit
VIN = VCCH
−
−
1.0
µA
VIN = GND
−1.0
−
−
µA
VIN = VCCH
−
−
1.0
µA
IOL = 3.2 mA
−
−
0.4
V
IOL = 1.5 mA
−
−
0.3
V
DO
IOL = 100 µA
VCCL = VCCH to 1.5 V
−
−
0.1
V
DO
IOH = −100 µA
VCCL = VCCH to 1.5 V
VCCL−0.2
−
−
V
IOL = 3.2 mA
−
−
0.6
V
IOL = 1.5 mA
−
−
0.4
V
Low-level output voltage
High-level output voltage
Condition
SCL
When the option for BPDX is valid.
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ AC Electrical Characteristics
VCCH
Table 9 Measurement Conditions
VIL = 0.1 × VCCH, VIH = 0.9 × VCCH
20 ns
0.5 × VCCH
100 pF+ Pull-up resistor 1.0 kΩ
Input pulse voltage
Rising/falling time of input pulse
Output reference voltage
Output load
SDA
R=1.0 kΩ
C=100 pF
Figure 10 Output Load Circuit
Table 10
AC Electrical Characteristics
Item
Symbol
VCCH = 2.3 to 4.5 V
Min.
Typ.
Max.
0
−
400
1.3
−
−
0.6
−
−
−
−
0.9
50
−
−
0.6
−
−
0.6
−
−
100
−
−
0
−
−
0.6
−
−
−
−
0.3
−
−
0.3
1.3
−
−
−
−
50
SCL clock frequency *1
fSCL
SCL clock time “L” *1
tLOW
SCL clock time “H” *1
tHIGH
*1
SDA output delay time
tAA
SDA output hold time *1
tDH
Start condition setup time *1
tSU.STA
Start condition hold time *1
tHD.STA
Data input setup time *1
tSU.DAT
*1
Data input hold time
tHD.DAT
Stop condition setup time *1
tSU.STO
SCL, SDA rise time *1
tR
SCL, SDA fall time *1
tF
Bus release time *1
tBUF
Noise suppression time *1
tI
Frequency for external
fTEX
−
−
oscillation input *2
*1. The timing is defined by 10% and 90% of the waveform.
*2. When selecting the option for external oscillation input.
tF
tHIGH
400
Unit
kHz
µs
µs
µs
ns
µs
µs
ns
ns
µs
µs
µs
µs
ns
kHz
tR
tLOW
SCL
tSU.STA
tHD.DAT
tHD.STA
tSU.DAT
tSU.STO
SDA IN
tAA
tDH
tBUF
SDA OUT
Figure 11 Bus Timing
Seiko Instruments Inc.
9
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
Table 11 Characteristics of Period
Item
Symbol
Min.
Write period to E2PROM
tWR
−
*1
Delay time accuracy (short-time setting)
tDLY1
0.8 × T
Delay time accuracy (long-time setting)*1
0.8 × LT
tDLY2
*1. Refer to Figure 16 Timer Setting Register.
T represents time reference (timer scale) in the short-time setting.
LT represents time reference (timer scale) in the long-time setting.
Typ.
2.0
T
LT
Max.
5.0
1.2 × T
1.2 × LT
tWR
SCL
SDA
D0
Stop Condition
Write Data
Acknowledgement
Signal
Figure 12 Write Cycle Timing
10
Seiko Instruments Inc.
Start Condition
Unit
ms
µs
µs
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Device Addressing
To start communication, the master device (MPU) on the system generates a start condition for the slave device
(S-7760A). After that, the master device sends a device address with 7-bit length and Read/Write instruction code with
1-bit length on the SDA bus. The higher 3 bits in a device address (DC2, DC1, DC0) are device codes. A device code can
obtain the fixed value selected by option. Command is omitted if a device code does not correspond. Set the command in
the following 4 bits (C3, C2, C1, C0). Next, by selecting either of Read or Write by Read/Write bit, the S-7760A sends an
acknowledgement signal back. If the second byte is Read, MPU sends an acknowledgement signal back after outputting
data Read with 8-bit length. If it is Write, after outputting Write data with 8-bit length, the S-7760A sends an
acknowledgement signal back. To finish these sequential commands, the S-7760A generates a stop condition as its final
procedure.
There is a 1-byte command for the S-7760A, but inputting the second byte as a dummy does not affect on this device
addressing. In this case, the operation for the second byte is as well as for Read/Write because of the bit corresponding to
Read/Write in the first byte.
Read/Write bit Acknowledgment
Signal
Start
Device
Code
STA
DC2
DC1
Command
DC0
C3
C2
C1
C0
MSB
R/W
ACK
Stop
LSB
Register data
B7
B6
B5
B4
B3
B2
MSB
B1
B0
ACK
STP
LSB
Figure 13 Device Address
Seiko Instruments Inc.
11
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Configuration of Command
Table 12 List of Command
Command
C3
0
Reload
2
C2
0
C1
0
C0
R/W
0
R/W
*2
Data
B7
B6
B5
B4
*1
B3
B2
B1
B0
－
Switching access to register/E PROM
0
0
0
1
－
－
Timer enable register
0
0
1
0
W
Do not use (Do not access)
0
0
1
1
－
－
Do not use (Do not access)
0
1
0
0
－
－
Control port
0
1
0
1
R/W
*3
Setting for timer scale
0
1
1
0
R/W
*3
Do not use (Do not access)
0
1
1
1
－
－
－
－
TEN3 TEN2 TEN1 TEN0
CTR7 CTR6 CTR5 CTR4 CTR3 CTR2 CTR1 CTR0
TS7
TS6
TS5
－
TS4
TS3
TS2
TS1
TS0
－
Timer setting for DO0
1
0
0
0
R/W
*3
Timer setting for DO1
1
0
0
1
R/W
*3
8×T
7×T
6×T
5×T
4×T
3×T
2×T
1×T
Timer setting for DO2
1
0
1
0
R/W
*3
8×T
7×T
6×T
5×T
4×T
3×T
2×T
1×T
Timer setting for DO3
1
0
1
1
R/W
*3
8×T
7×T
6×T
5×T
4×T
3×T
2×T
1×T
Do not use (Do not access)
1
1
0
0
－
－
Do not use (Do not access)
1
1
0
1
－
－
Do not use (Do not access)
1
1
1
0
－
－
Do not use (Do not access)
1
1
1
1
－
－
*1.
8×T
7×T
6×T
5×T
4×T
3×T
2×T
1×T
R / W = 1/0 Both execute “reload”.
2
*2. It is register access mode when R / W = 0, E PROM access mode when R / W = 1.
2
*3. By Switching access to register/E PROM, users can select either register or E2PROM when Read/Write. Refer to “„
Register and E2PROM”.
„ Register and E2PROM
This IC has an E2PROM. Data in the E2PROM is maintained despite power-off. The S-7760A has a register which
corresponds to the data in the E2PROM, the S-7760A sends data to this corresponding register during power-on
(releasing detection of the low voltage) and inputting the reload command. In case of selecting the RESX pin by option,
the S-7760A reloads after releasing reset. The following registers are the ones to be reloaded;
・Control port register (1-byte)
・Timer scale setting register (1-byte)
・DO3 to 0 Timer setting register (1-byte in each port, total 4 bytes)
Users are able to switch access between corresponding register and E2PROM by “Switching access to register/E2PROM”
command. Immediately after power-on, the S-7760A is in “register access mode”. In this register access mode, only the
register is rewritten, the E2PROM maintains the prior data. But in “E2PROM access mode”, both data in the register and
the E2PROM is rewritten. In data Read, access mode data which is being selected by user; is read.
12
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Command
1. Reload
This is a 1-byte command. Users can reload by inputting either of R / W in 0/1. When inputting this command, the
data corresponding to the E2PROM is loaded to the register. After completing reload, (if the condition is satisfied), the
timer action starts. The reload command is not accepted during the timer action (from its start to the final invert of
output). Refer to “„ Condition to Start Timer” regarding details.
2. Switching access to register/E2PROM
This is a 1-byte command. The mode is in “register access mode” when this command is R / W = 0, “E2PROM
access mode” when this command is R / W = 1. The register corresponding to the E2PROM is the one to be
reloaded. In register access mode, only the register is rewritten, the E2PROM maintains the prior data. In “E2PROM
access mode”, both data in the register and E2PROM is rewritten.
3. Timer enable register
A timer enable register is a 4-bit register for Write only (it sends back FFh during Read). By setting each bit in the
register in “1”, an oscillation circuit starts, output from the lower 4ch ports (DO3 to 0) invert after the elapsed period
which is set by a timer setting register. This action is called “timer action”. This timer action starts at the point when
receiving TEN0 which is LSB in the register. The bit automatically goes back in “0” after writing “1” in the timer enable
register. Users cannot write in this register during the timer action (from the start to the final invert of output). This
register is not the one to be reloaded, thus it does not have the data which corresponds to the E2PROM. The option is
available for the condition to start a timer; Condition AND with TIMEN = High, depending on the option. Refer to “„
Condition to Start Timer” regarding details.
MSB
B7
B6
B5
B4
B3
B2
B1
B0
－
－
－
－
TEN 3
TEN 2
TEN 1
TEN 0
W
W
W
W
W
W
W
W
LSB
Figure 14 Timer Enable Register
0 : Disable to invert output
1 : Enable to invert output
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PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
4. Control port register
Control port register is an 8-bit register. Users can set output data which is from output ports (DO7 to 0). If data is “1”,
output is “H”, and if it is “0”, output is “L”. This register is the one to be reloaded. Data in this register does not change
even if output from the port is inverted by timer action.
B7
MSB
B6
B5
B4
B3
B2
B1
B0
CTR7
CTR6
CTR5
CTR4
CTR3
CTR2
CTR1
CTR0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
LSB
Figure 15 Control Port Register
5. Timer scale setting register
The lower 4 bits are registers for timer scale setting. Users can set, whether short-time or long-time, time reference
(scale) for the delay time setting at each port DO3 to 0.
The higher 4 bits are Read/Write-able bits, however, they do not affect on circuit action because DO7 to 4 have fixed
output. This register is the one to be reloaded.
MSB
B7
B6
B5
B4
B3
B2
B1
B0
TS7
TS6
TS5
TS4
TS3
TS2
TS1
TS0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
TSn = 1 : Timer scale DO3 to 0 Short-time setting
TSn = 0 : Timer scale DO3 to 0 Long-time setting
Figure 16 Timer Scale Setting Register
14
Seiko Instruments Inc.
LSB
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
6. DO0 to 3 Timer setting registers
These registers are 8-bit registers which correspond to each port, with these registers, users can set delay time for the
change of output at output ports (DO0 to 3). When delay time is set, its value is a multiple of timer scale. The multiple
is integers 1 to 8. By setting the corresponding bits seen in Figure 17 in “1”, a multiple is selected to determine delay
time. For each port, set only 1-bit in the bit that you set “1”. And if setting all 8 bits in “0”, output is not inverted even if
the condition to start a timer matches.
MSB
B7
B6
B5
B4
B3
B2
B1
B0
DO0
8×T
7×T
6×T
5×T
4×T
3×T
2×T
1×T
DO1
8×T
7×T
6×T
5×T
4×T
3×T
2×T
1×T
DO2
8×T
7×T
6×T
5×T
4×T
3×T
2×T
1×T
DO3
8×T
7×T
6×T
5×T
4×T
3×T
2×T
1×T
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
LSB
Figure 17 Timer Setting Register DO0 to 3
Figure 17 shows the short-time timer scale setting. In case of a long-time setting, T is LT.
The following options are available for timer setting.
・Using an internal oscillation circuit/Switching the external clock input
・Option setting for delay time (4 types)
(1) When using an internal clock (Typ.)
Option A : (Short-time setting scale, long-time setting scale) = (T, LT) = (5 µs, 320 µs)
Option B : (Short-time setting scale, long-time setting scale) = (T, LT) = (10 µs, 640 µs)
(2) When using an external clock (Period of input clock = T’)
Option A : (Short-time setting scale, long-time setting scale) = (T, LT) = (T’, 64 × T’)
Option B : (Short-time setting scale, long-time setting scale) = (T, LT) = (2 × T’, 128 × T’)
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PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
In case that users select “delay time option A” and to use an internal oscillation circuit, and if setting “1” in B6 bit in the
D03 timer setting register, “1” in TS3 in the timer scale register, DO3 inverts at delay time of 35 µs (7 × 5 µs). Other
examples are shown in Figure 18.
MSB
B6
B7
B5
B4
B3
B2
B1
B0
Example 1-1
40 µs
35 µs
30 µs
25 µs
20 µs
15 µs
10 µs
5 µs
Example 1-2
2.56 ms
2.24 ms
1.92 ms
1.60 ms
1.28 ms
0.96 ms
0.64 ms
0.32 ms
B4
B3
B2
B1
B0
MSB
B6
B7
B5
Example 2-1
160 µs
140 µs
120 µs
100 µs
80 µs
60 µs
40 µs
20 µs
Example 2-2
10.24 ms
8.96 ms
7.68 ms
6.40 ms
5.12 ms
3.84 ms
2.56 ms
1.28 ms
LSB
LSB
Example 1. When using an internal CLK
Example 1-1 In case of; Timer scale register “1” (short-time setting), Delay time option “A” (×1 setting); (T = 5 µs)
Example 1-2 In case of; Timer scale register “0” (long-time setting), Delay time option “A” (×1 setting); (LT = 320 µs)
Example 2. When using an external CLK (100 KHz, T’ = 10 µs)
Example 2-1 In case of; Timer scale register “1” (short-time setting), Delay time option “B” (×2 setting); (T = 2 × T’ = 20 µs)
Example 2-2 In case of; Timer scale register “0” (long-time setting), Delay time option “B” (×2 setting); (LT = 128 × T’ = 1280 µs)
Figure 18 Example of Using Timer Setting Register 0 to 3
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PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Condition to Start Timer
Table 13 Condition to Start Timer
Option
1
2
Condition
A
B
C
D
Reload
Start → Finish
Regular status
Regular status
Regular status
TIMEN Pin
“H”
“L” → “H”
“H”
Don’t care
Bit TEN3 to 0
Don’t care
Don’t care
Write “0” → “1”
Write “0” → “1”
2 types of options are available for the condition to start a timer. Select either for each digital output port DO0 to 3;
if selecting option 1, the condition to start a timer is three, A/B/C.
If in option 2, the condition is D only. In D, the S-7760A does not react to reload and rising of TIMEN. By writing “1” in TEN,
not in TIMEN, the timer starts.
During power-on of power supply VCCH, the S-7760A automatically reloads (transmits data from the E2PROM to the
register). In this case, TIMEN = “H” and it is in option 1, the S-7760A goes in the timer action after reloading. Thus the
sequential action is; after power-on of power supply VCCH, reload → timer. This is as well if the status changed from
detection to release of the low power supply voltage.
The timer action does not stop in the middle of its process even if setting TIMEN in “H” → “L” after the timer action has
started. In selecting “the option for internal oscillation circuit”, the oscillation circuit is generally being stopped, but the
oscillation starts when the condition to start a timer matches. And it stops by finishing the timer action (the final invert of
output).
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PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Timing of Data Loading from E2PROM and Timer Action
The example of timing chart of data loading from the E2PROM and timer action is shown in Figure 19 and 20.
Set VCCH ≥ 2.5 V when rising VCCH and TIMEN simultaneously.
Power supply voltage
VCCH / VCCL
2.05 V Typ.
Signal of low power
supply voltage
detection
TIMEN pin
Data loading
Start of timer action due to power-on
Start of timer action by Write in
timer enable register
Start of timer action by setting
TIMEN pin “L” → “H”
Oscillation circuit
EN
Time out
Delay time by timer setting with DO3
Time out
Delay time by timer setting with DO3
Time out
Delay time by timer setting with DO3
DO3 pin
(When E2PROM
CTR3 = 0)
Reload starts
CTR3 register
(When E2PROM
CTR3 = 0)
Delay time by timer setting with DO2
Delay time by timer setting with DO2
Delay time by timer setting with DO2
DO2 pin
(When E2PROM
CTR2 = 1)
Reload starts
CTR2 register
(When E2PROM
CTR2 = 1)
Period to define data
*1.
*1
2
A period to define data is; the loading period from E PROM + the period to stabilize output from DO7 to 0 pin = within
100 µs.
Figure 19 Data Loading and Timer Action Example 1
18
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
This IC goes in the status to reset the circuits when the power supply voltage decreases less than the level of the
detection voltage of the circuit for prevention malfunction by low voltage (1.75 V Typ.). And the DO7 to 0 pins go in “L”.
After that, when the power supply voltage increases more than the level of the release voltage of the circuit for prevention
malfunction by low voltage (2.05 V Typ.), data is reloaded from the E2PROM to the register, the values of DO7 to 0 pins go
back to its default.
2.05 V Typ.
1.75 V Typ.
Power supply voltage
VCCH / VCCL
Signal of low power
supply voltage
detection
TIMEN pin
Data loading
Exceeded the release voltage of
low supply voltage detection
(2.05 V); Timer action starts
Time out
Time out
Timer action starts by reloading
Oscillation circuit
EN
Device code
Start condition
ACK
Reload instruction
Stop condition
SDA
SCL
Delay time by timer setting with DO3
Delay time by timer setting with DO3
DO3 pin
(When E2PROM
CTR3 = 0)
CTR3 register
*1
Reload starts
Reload starts
(When E2PROM
CTR3 = 0)
Delay time by timer setting with DO2
Delay time by timer setting with DO2
DO2 pin
(When E2PROM
CTR2 = 1)
Reload starts
CTR2 register
Reload starts
*1
(When E2PROM
CTR2 = 1)
Period to define data
*2
Period to define data
*2
*1.
Output from DO7 to 0 goes in “L” when the power supply voltage decreases more than the level of the detection
voltage of the circuit for prevention malfunction by low voltage.
2
*2. A period to define data is; the loading period from E PROM + the period to stabilize output from DO7 to 0 pin = within
100 µs.
Figure 20 Data Loading and Timer Action
Seiko Instruments Inc.
Example 2
19
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Flowchart of Data Loading from E2PROM and Timer Action
Power-on
Loading each data from
2
E PROM to register
DO pin outputs default value
No
TIMEN pin = “H”?
Yes
TIMEN pin
“L” → “H”?
No
Yes
Timer setting register is
in “1”?
No
Yes
Timer action starts
DO output inverts after
set time has elapsed
TIMEN pin
“H” → “L”?
No
Yes
Timer enable register
“0” → “1”?
No
Yes
Figure 21 Flowchart of S-7760A’s Action (When selecting “condition to start timer Option 1”)
20
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
Power-on
Loading each data from
E2PROM to register
DO pin outputs default value
Timer enable register
“0” → “1”?
No
Yes
Timer setting register
is in “1”?
No
Yes
Timer action starts
DO output inverts after
set time has elapsed
Figure 22 Flowchart of S-7760A’s Action (When selecting “condition to start timer Option 2”)
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PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Operation
1. Start condition
A start condition starts by changing the SDA line from “H” to “L” while the SCL line is “H”. Input a start condition first
when inputting a command via I2C-bus interface.
2. Stop condition
A stop condition starts by changing the SDA line from “L” to “H” while the SCL line is “H”. Input a stop condition in the
end when inputting a command via I2C-bus interface.
“H”
“H”
SCL
SDA
Start Condition
Stop Condition
Figure 23 Start / Stop Condition
3. Data transfer
The S-7760 installs data in the SDA line at a rising edge of the SCL line.
Change the SDA line while the SCL line is “L” during the data transmission.
If changing the SDA line while the SCL line is “H”, the S-7760A goes in the start or stop condition status.
SCL
“L”
“L”
SDA
Figure 24 Data Transfer Timing
22
Seiko Instruments Inc.
“L”
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
4. Acknowledgment
Data is transmitted sequentially in 8-bit. Changing the SDA line to “L” indicates that the devices on the system bus
have received data, thus the devices send an acknowledgment signal back during the 9th clock of cycle.
The S-7760A does not send an acknowledgment signal back during the Write operation.
SCL
Input
1
8
9
SDA
(Master device’s
output)
Acknowledgment
signal output
SDA
Output
Start
Condition
Figure 25
Acknowledgment Output Timing
5. Read operation
When this IC receives the 7-bit device address and the Read/Write instruction code “1” after receiving a start condition,
it generates an acknowledgment signal.
Next, data with 8-bit length is output from this IC synchronizing with the SCL clock.
After that, the master device sends a stop condition, not an acknowledgment signal in order to finish the Read
operation.
S
T
A
R
T
SDA LINE
DEVICE
ADDRESS
NO ACK from
Master Device
R
E
A
D
D D D
C C C C3 C2 C1 C0 1
2 1 0
M
S
B
L R
S /
B W
S
T
O
P
B7 B6 B5 B4 B3 B2 B1 B0
A
C
K
DATA
Figure 26 Read
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PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
6. Write operation
6. 1 Write
When this IC receives the 7-bit device address and the Read/Write instruction code “0” after receiving a start condition,
it generates an acknowledgment signal.
Next, after it receives the 8-bit word address and generates an acknowledgment signal, it receives a stop condition to
finish the Write command.
In the Write operation to the E2PROM, the Write operation starts with a stop condition, the S-7760A finishes it after the
period to Write (max. 5 ms) has elapsed. During Write to the E2PROM, all operations are inhibited to be performed
and the S-7760A does not send back any acknowledgment signals for command inputs.
S
T
A
R
T
SDA LINE
DEVICE
ADDRESS
W
R
I
T
E
S
T
O
P
DATA
D
C
2
D D
C C C3 C2 C1 C0 0
1 0
M
S
B
L R
S /
B W
B7 B6 B5 B4 B3 B2 B1 B0
A
C
K
A
C
K
Figure 27 Write
6. 2 Write Protect
Write protect is available in the S-7760A.
When the WP pin is connected to VCCH, the Write operation in all memory area is inhibited. When the WP pin is
connected to GND, Write protect becomes invalid so that the Write operation in all memory area is accepted.
Fix the WP pin during the period; from rising of SCL at installing the last bit in Write data until the completion of Write
period (max. 5 ms).
Written data in the address is not assured if the condition of the WP pin is changed during this period. Be sure to
connect the WP pin to GND when you don’t use Write Protect. Write Protect is valid in the range of power supply
voltage.
tWR
SCL
B0
SDA
Write Data
Acknowledgment
signal
Stop
Condition
WP
Period to fix WP pin
Figure 28 Period to Fix WP Pin
24
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Start
Condition
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
6. 3
Acknowledgment polling
Acknowledge polling is used to find when the Write operation has completed. After receiving a stop condition the Write
operation has once started, all operations are inhibited to be performed so that the S-7760A cannot respond to the
signals transmitted from the master device. The master device sends a start condition, the device address and
Read/Write instruction code to the S-7760A (slave device), and detects the response from the slave device. It is
possible to find when the Write operation has completed. Thus if the slave device does not send an acknowledgment
signal back, the Write operation is in progress. If it sends an acknowledgment signal back, the Write operation has
completed. Fix the WP pin until an acknowledgment is confirmed. It is recommended to use the Read instruction “1”
for the Read/Write instruction code transmitted from the master device during acknowledgment polling.
6. 4 Irregular action
In the middle of inputting Write data, if inputting a stop condition in clock less than the specified data length (8-bit), the
S-7760A does not perform Write to the E2PROM. And it either does not perform Write to the E2PROM if receiving a
stop condition after receiving data over 9-bit. However, data in the register has been rewritten at the point when the
S-7760A has received the specified length data. Be sure not to input clock which exceeds the specified value due to
noise or other causes.
Seiko Instruments Inc.
25
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Example of Flowchart for Software
1. Read/Write in register
The example of flowchart for software when accessing to the control port register is shown in Figure 29.
START
Switching access to
2
E PROM/register
1-byte command
Access to
control port register
2-byte command
END
(ST, DC2 to 0, 0001, 0, ACK, SP)*1
• Write
(ST, DC2 to 0, 0101, 0, ACK, CTR7 to 0, ACK, SP)*1
• Read
(ST, DC2 to 0, 0101, 1, ACK, CTR7 to 0, ACK, SP)*1
*1. ST
DC2 to 0
ACK
CTR7 to 0
SP
: Start condition
: Device code
: Acknowledgment
: Control port register
: Stop condition
Figure 29 Flowchart for Software Example 1
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Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
2.
Read/Write in E2PROM
The example of flowchart for software when accessing to the E2PROM is shown in Figure 30.
START
WP pin = “L”?
No
Yes
Switching access to
E2PROM/register
1-byte command
(ST, DC2 to 0, 0001, 1, ACK, SP)*1
Access to
control port E2PROM
2-byte command
• Write
(ST, DC2 to 0, 0101, 0, ACK, CTR7 to 0, ACK, SP)*1
• Read
(ST, DC2 to 0, 0101, 1, ACK, CTR7 to 0, ACK, SP)*1
END
*1. ST
DC2 to 0
ACK
CTR7 to 0
SP
: Start condition
: Device code
: Acknowledgment
: Control port register
: Stop condition
Figure 30 Flowchart for Software Example 2
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PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Write Protect Function during the Low Power Supply Voltage
The S-7760A has a built-in detection circuit which operates with the low power supply voltage, cancels Write when the
power supply voltage drops and power-on. Its detection voltage is 1.75 V (Typ.) and the release voltage is 2.05 V (Typ.),
and its hysteresis is approx. 0.3 V.
The S-7760A cancels Write by detecting a low power supply voltage when it receives a stop condition.
Both in the data transmission and the Write operation, data in the address written during the low power supply voltage is
not assured.
Hysteresis
approx. 0.3 V
Power supply voltage
Release voltage (+VDET)
2.05 V Typ.
Detection Voltage (−VDET)
1.75 V Typ.
Cancel the Write instruction
Figure 31 Operation during Low Power Voltage
28
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PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ How to Use S-7760A
1.
SDA I/O pin and SCL input pin
In consideration of I2C-bus protocol function, the SDA I/O and SCL input pins*1 should be connected with a pull-up
resister of 1 to 5 kΩ.
The S-7760A cannot transmit normally without using a pull-up resistor.
*1.
In the case that the SCL input pin of the S-7760A is connected to the tri-state output pin in the master device,
connect the SCL input pin with a pull-up resistor as well in order not to set the SCL input pin in high impedance.
This prevents the S-7760A from error caused by high impedance from the tri-state pin when resetting the master
device during the voltage drop.
The bus pull-down function is available for S-7760A by option because it is assumed that the pull-up power supply
may be in high impedance depending on case. Except for this IC, if users do not have an element to fix the potentials
of SDA and SCL pins, set BPDX in “L” output in order to pull down the SDA and SCL pins.
2. Reset after transmission interruption
This IC does not have a pin to reset, but it generally resets the internal circuit by inputting a stop or start condition.
However, in case that transmission is interrupted, for example, only the master device is reset because the power
supply voltage drops during transmission; the internal circuit maintains the status before interruption. If the status is
that the SDA pin outputs “L” (outputs an acknowledge signal or in Read), this IC does not perform the next operation
because it cannot receive a start or stop condition from the master device. Therefore it is necessary to finish
outputting an acknowledgment signal and the Read operation in SDA. Figure 32 shows how to reset.
First, input a start condition. (While the SDA pin is outputting “L”, the S-7760A does not go in the start condition but
this “L” output does not affect on the slave device.) Next, input clock (27 clocks) which is equivalent to 3-byte data
access from the SCL pin. During this procedure, pull up the SDA line which is connected closer to the master device.
Due to this, the SDA pin’s I/O prior to transmission interruption ends so that the SDA pin goes in “H”. After that, by
inputting a stop condition, the S-7760A returns to the status possible to perform the general transmission. It is
recommended to perform this reset when you initialize, after power-on the master device. A circuit for prevention
malfunction by a low power supply voltage is equipped in this IC, thus it automatically resets internally when a low
voltage is applied to this IC.
Start
Condition
1
SCL
Stop
Condition
Clock equivalent to 3-byte data access
2
8
9
26
27
SDA
Master
SDA
Slave
“L” or
“High-Z”
“L” or
“High-Z”
“L” or
“High-Z”
“High-Z”
“High-Z”
“High-Z”
Figure 32 How to Reset S-7760A
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PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
3. Acknowledgment check
The I2C-bus protocol includes an acknowledgment check function as a handshake function to prevent a
communication error. This function allows detection of a communication failure during data communication between
the master device and the S-7760A.
4. Built-in power-on-clear circuit
The S-7760A has a built-in power-on-clear circuit that initializes itself at the same time during power-on. Unsuccessful
initialization may cause a malfunction. To operate the power-on-clear circuit normally, the following conditions must be
satisfied to raise the power supply voltage.
4. 1 Raising power supply voltage
As shown in Figure 33, raise the power supply voltage from 0.2 V max., within the time defined as tRISE which is the
time required to reach the power supply voltage to be set.
For example, if the power supply voltage is 3.0 V, tRISE = 100 ms as seen in Figure 34. The power supply voltage
must be raised within 100 ms.
tRISE (Max.)
Power supply voltage (VCCH)
VINIT (Max.)
0.2 V
0 V*1
*2
tINIT (Max.)
*1. 0 V means there is no difference in potential between the VCCH pin and the VSS
pin of the S-7760A.
*2. tINIT is the time required to initialize the S-7760A. No instructions are accepted
during this time.
Figure 33 Raising Power Supply Voltage
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PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
5.0
4.0
Power supply voltage(VCCH)
[V]
3.0
2.0
50
100
150
200
Rise time (tRISE) Max.
For example:
[ms]
If your S-7760A’s supply voltage = 3.0 V, raise the power supply voltage to 3.0 V within 100 ms.
Figure 34 Raising Time of Power Supply Voltage
When initialization is successfully completed by the power-on-clear circuit, the S-7760A enters the standby status.
If the power-on-clear circuit does not operate, the followings are the possible causes.
(1)
(2)
Because the S-7760A has not completed initialization, an instruction previously input is still valid or an
instruction may be inappropriately recognized. In this case, S-7760A may perform the Write operation.
The voltage drops due to power off while the S-7760A is being accessed. Even if the master device is reset
due to the low power voltage, the S-7760A may malfunction unless the conditions for the power-on-clear
operation are satisfied.
Seiko Instruments Inc.
31
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
4. 2
Initialization time
The S-7760A initializes at the same time when the power supply voltage is raised. Input instructions to the S-7760A
after initialization. The S-7760A does not accept any instruction during initialization.
Figure 35 shows the initialization time of the S-7760A.
100 m
10 m
S-7760A initialization
time (tINIT) Max.
1.0 m
[s]
100 µ
10 µ
1.0 µ
1.0 µ
10 µ
100 µ 1.0 m 10 m
100 m
Rise time (tRISE)
[s]
Figure 35 Initialization Time of S-7760A
5. Data hold time (tHD. DAT = 0 ns)
If SCL and SDA of the S-7760A are changed at the same time, the timing which takes to reach this IC slightly lags
due to a load on the bus line. As a result, the change in the SDA precedes a falling edge of SCL so that S-7760A
may recognize a start/stop condition.
To avoid this, in the S-7760A, it is recommended to set the delay time of over 0.3 µs for a falling edge of SCL.
In its specs, it is described as the S-7760A works at 0 ns of data hold time, however, take account into the above
action in actual use.
tHD. DAT = 0.3 µs Min.
SCL
SDA
Figure 36 Data Hold Time
32
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
6. SDA pin and SCL pin noise suppression time
The S-7760A includes a built-in low-pass filter at the SDA and SCL pins to suppress noise.
This filter suppresses noise with the width of less than 130 ns when the power supply voltage is 3.0 V.
Refer to noise suppression time (tl) in Table 10 regarding details of the assurable value.
400
300
Noise suppression time (tI) Max.
[ns]
200
100
0
2.0
3.0
4.0
5.0
Power supply voltage VCCH [V]
Figure 37
Noise Suppression Time for SDA and SCL Pins (CMOS input type)
400
300
Noise suppression time (tI) Max.
[ns]
200
100
0
2.0
3.0
4.0
5.0
Power supply voltage VCCH [V]
Figure 38
Noise Suppression Time for SDA and SCL Pins (Low voltage input type)
Seiko Instruments Inc.
33
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Precautions
• Semiconductor devices must be used within the absolute maximum rating. Special caution is required for the
supply voltage. A momentary surge voltage exceeding the rated value may cause latch-up and malfunction.
Confirm the detailed usage conditions required for each parameter by referring to the data sheet before use.
• If the S-7760A operates with moisture remaining in the circuits, a short circuit may occur between pins, causing a
malfunction. When the S-7760A is taken out of the constant-low-temperature bath during evaluation, the pins of the
S-7760A may be frosted. Note that, if the S-7760A is operated with the pins frosted, the pins may be short-circuited
by moisture, causing a malfunction.
The same applies when the S-7760A is used in an environment where condensation may occur, so care is required.
• Although the IC contains a static electricity protection circuit, static electricity that exceeds the limit of the protection
circuit should not be applied.
• Seiko Instruments Inc. assumes no responsibility for the way in which this IC is used in products created using this
IC or for the specifications of that product, nor does Seiko Instruments Inc. assume any responsibility for any
infringement of patents or copyrights by products that include this IC either in Japan or in other countries.
„ Precautions for WLP Package
• The device’s silicon substrate side is exposed to the marking side of the device package. Since this portion has a
lower strength against mechanical stress than a standard plastic package, take sufficient care to avoid chips and
cracks when handling the package. Moreover, the exposed side of the silicon has the electrical potential of the
device substrate, and needs to be kept out of contact with the external potential.
• In this package, the transistor area side is overcoated with a translucent resin. Keep in mind that the
characteristics of the package may be affected if the device is exposed under an intensive light source.
34
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Option
The explanation of seven options which are available for this IC and the option tables are shown here. When selecting the
option, follow these descriptions.
1. Device code (8 types)
Selecting the arbitrary device address code is available (Refer to Figure 13).
Table 14 Option List of Device Code
No.
Opt10
Opt11
Opt12
Opt13
Opt14
Opt15
Opt16
Opt17
C2
0
0
0
0
1
1
1
1
C1
0
0
1
1
0
0
1
1
C0
0
1
0
1
0
1
0
1
2. Internal generation of oscillation CLK/External input
Although this IC has an oscillation circuit for generating delay time, without operating this circuit, it is also possible to
use this IC’s external oscillation CLK for generating delay time.
Table 15
No.
Opt20
Opt21
Option List of Oscillation CLK
Internal/External
Using an internal oscillation circuit
Using an external oscillation circuit
3. Delay time
Delay time is selectable in the following settings (T’ : Oscillation CLK cycle (approx. 5 µs when using an internal
oscillation circuit).
Table 16 Option List of Delay Time
No.
Opt30
Opt31
Timer scale setting register
1: Delay time for short-time setting (T)
0: Delay time for long-time setting (LT)
T’ × 1
T’ × 64
T’ × 2
T’ × 128
Seiko Instruments Inc.
35
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
4. TIMEN/RESX pin
Users can select whether to use a pin as TIMEN or RESX.
Table 17
No.
Opt40
Opt41
Option List of TIMEN/RESX
Function
TIMEN
RESX
5. CLK/BPDX pin
Users can select whether to use a pin as CLK or BPDX.
Table 18 Option List of CLK/BPDX
No.
Opt50
Opt51
Function
CLK
BPDX
6. Condition to start timer
For the lower output ports 4 channels, users can select the condition to start a timer at each port.
Table 19 Option List of Condition to Start Timer
Output
No.
Opt60
DO0
Opt61
Opt70
DO1
Opt71
Opt80
DO2
Opt81
Opt90
DO3
Opt91
Condition to start timer
(Power on and TIMEN = High) or
(TIMEN = Low to High) or
(TEN0 = 0 to 1 and TIMEN = High)
TEN0 = 0 to 1
(Power on and TIMEN = High) or
(TIMEN = Low to High) or
(TEN1 = 0 to 1 and TIMEN = High)
TEN1 = 0 to 1
(Power on and TIMEN = High) or
(TIMEN = Low_to_High) or
(TEN2 = 0 to 1 and TIMEN = High)
TEN2 = 0 to 1
(Power on and TIMEN = High) or
(TIMEN = Low to High) or
(TEN3 = 0 to 1 and TIMEN = High)
TEN3 = 0 to 1
7. High/low leveled input voltage type for pin
Users can select the input voltage types either high or low level for the SDA, SCL and TIMEN pins.
Table 20 Option List of High/low Leveled Input Voltage
No.
Opt100
Opt101
36
Function
CMOS input type
Low voltage input type
Seiko Instruments Inc.
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Option Format
Please fill in check in this table and send to our sales office when you order the option.
Item
Device code
DC2 to 0
Oscillation clock
Delay time and timer
scale
Pin function
Option 1
Pin function
Option 2
DO0 condition to start
timer
No.
Opt10
Opt11
Opt12
Opt13
Opt14
Opt15
Opt16
Opt17
Opt20
Opt21
Opt30
Opt31
Opt40
Opt41
Opt50
Opt51
Opt91
0,0,0
0,0,1
0,1,0
0,1,1
1,0,0
1,0,1
1,1,0
1,1,1
Using an internal oscillation circuit
Using an external oscillation circuit
T’ × 1 , T’ × 64
T’ × 2 , T’ × 128
TIMEN
RESX
CLK
BPDX
(Power on and TIMEN = “H”) or
(TIMEN = “L” to “H”) or
(TEN0 = 0 to 1 and TIMEN = “H”)
TEN0 = 0 to 1
(Power on and TIMEN = “H”) or
(TIMEN = “L” to “H”) or
(TEN1 = 0 to 1 and TIMEN = “H”)
TEN1 = 0 to 1
(Power on and TIMEN = “H”) or
(TIMEN = “L” to “H”) or
(TEN2 = 0 to 1 and TIMEN = “H”)
TEN2 = 0 to 1
(Power on and TIMEN = “H”) or
(TIMEN = “L” to “H”) or
(TEN3 = 0 to 1 and TIMEN = “H”)
TEN3 = 0 to 1
Opt100
CMOS input type
Opt101
Low voltage input type
Opt60
Opt61
DO1 condition to start
timer
Opt70
Opt71
DO2 condition to start
timer
Opt80
Opt81
DO3 condition to start
timer
High/low leveled input
voltage for pin
Option
Opt90
Seiko Instruments Inc.
Fill in check
here
37
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Table for Write data to E2PROM
Please fill this table and send to our sales office when you order Write data to E2PROM.
E2PROM (Command code)
Control port (0101)
Timer scale setting (0110)
D0 timer setting (1000)
D1 timer setting (1001)
D2 timer setting (1010)
D3 timer setting (1011)
38
Write data
Default
00H
FFH
00H
00H
00H
00H
Seiko Instruments Inc.
Remark
−
1: Short-time, 0; Long-time
1 for time that you select, 0 for others
1 for time that you select, 0 for others
1 for time that you select, 0 for others
1 for time that you select, 0 for others
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Product Name Structure
S-7760A x
x
x
x
−
xxxxx
Package name (abbreviation) and IC packing specifications
HCT1
: WLP-16A, Tape
TCT1G : 16-pin TSSOP*1
E2PROM code
Option code 2
Option excluded from Option 1
Option code 1
0: internal oscillation circuit, Delay time; ×1, ×64
1: internal oscillation circuit, Delay time; ×2, ×128
2: external oscillation circuit, Delay time; ×1, ×64
3: external oscillation circuit, Delay time: ×2, ×128
Device code : 0 to 7
*1.
Under development
„ Marking Specification
(1) WLP-16A
WLP-16A
Top view
7
(1) to (4)
7
6
0
A
4
1
1
4
: Lot number
(1) (2) (3) (4)
This is an example in S-7760A4114
Remark Contact our sales office regarding information on marking that you use.
Seiko Instruments Inc.
39
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
„ Characteristics (Typical Data)
1. DC Characteristics
1. 2 Current consumption (READ) ICC1
vs. Ambient temperature Ta
1. 1 Current consumption (READ) ICC1
vs. Ambient temperature Ta
0.4
0.4
0.3
ICC1 [mA]
0.3
ICC1 [mA]
VCCH = 3.0 V
fSCL = 400 kHz
VCCH = 4.5 V
fSCL = 400 kHz
0.2
0.1
0.2
0.1
0
0
−50
0
50
−50
100
0
50
Ta [°C]
100
Ta [°C]
1. 3 Current consumption (READ) ICC1
vs. Ambient temperature Ta
1. 4 Current consumption (READ) ICC1
vs. Power supply voltage VCCH
0.3
0.4
VCCH = 2.3 V
fSCL = 400 kHz
Ta = 25°C
fSCL = 400 kHz
0.3
ICC1 [mA]
ICC1 [mA]
0.2
0.2
0.1
0.1
0
0
−50
0
50
2.0
100
1. 5 Current consumption (PROGRAM) ICC2
vs. Ambient temperature Ta
0.3
VCCH = 4.5 V
5.0
0.2
ICC2 [mA]
ICC2 [mA]
4.0
1. 6 Current consumption (PROGRAM) ICC2
vs. Ambient temperature Ta
0.3
VCCH = 3.0 V
0.2
0.1
0
0.1
0
−50
0
50
100
Ta [°C]
40
3.0
VCCH [V]
Ta [°C]
−50
0
50
Ta [°C]
Seiko Instruments Inc.
100
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
1. 7 Current consumption (PROGRAM) ICC2
vs. Ambient temperature Ta
1. 8 Current consumption (PROGRAM) ICC2
vs. Power supply voltage VCCH
0.3
0.3
VCCH = 2.3 V
Ta = 25°C
0.2
ICC2 [mA]
ICC2 [mA]
0.2
0.1
0.1
0
0
−50
0
50
2.0
100
3.0
Ta [°C]
4.0
5.0
VCCH [V]
1. 9 Internal oscillator current consumption during operation ICC3 1. 10 Internal oscillator current consumption during operation ICC3
vs. Ambient temperature Ta
vs. Ambient temperature Ta
0.06
0.06
VCCH = 4.5 V
VCCH = 3.0 V
0.04
ICC3 [mA]
ICC3 [mA]
0.04
0.02
0.02
0
0
−50
0
50
−50
100
0
Ta [°C]
50
100
Ta [°C]
1. 11 Internal oscillator current consumption during operation ICC3 1. 12 Internal oscillator current consumption during operation ICC3
vs. Ambient temperature Ta
vs. Power supply voltage VCCH
0.06
0.06
VCCH = 2.3 V
Ta = 25°C
0.04
ICC3 [mA]
ICC3 [mA]
0.04
0.02
0.02
0
0
−50
0
50
100
Ta [°C]
2.0
3.0
4.0
5.0
VCCH [V]
Seiko Instruments Inc.
41
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
1. 13 Standby current consumption ISB
vs. Ambient temperature Ta
1. 14
1.5
7.0
6.0
VCCH = 4.5 V
SCL, WP, TIMEN, CLK = 0 V
Low voltage input
5.0
1.0
4.0
ILI [µA]
ISB [µA]
Input leakage current ILI
vs. Ambient temperature Ta
3.0
0.5
2.0
CMOS input
1.0
0
0
−50
0
50
−50
100
0
50
Ta [°C]
1. 15
100
Ta [°C]
Input leakage current ILI
vs. Ambient temperature Ta
1. 16 Output leakage current ILO
vs. Ambient temperature Ta
1.5
1.5
VCCH = 4.5 V
SCL, WP, TIMEN, CLK = 4.5 V
VCCH = 4.5 V
SDA = 0 V
1.0
ILI [µA]
ILO [µA]
1.0
0.5
0.5
0
0
−50
0
50
−50
100
0
50
100
Ta [°C]
Ta [°C]
1. 17 Output leakage current ILO
vs. Ambient temperature Ta
1. 18 Low level output voltage VOL1
vs. Low level output current IOL
1.5
0.4
VCCH = 4.5 V
SDA = 4.5 V
Ta = −40°C
SDA
0.3
VOL1 [V]
ILO [µA]
1.0
0.2
VCCH = 2.3 V
0.5
0.1
0
−50
0
50
100
Ta [°C]
42
VCCH = 4.5 V
0
Seiko Instruments Inc.
0
1
2
3
IOL [mA]
4
5
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
1. 19 Low level output voltage VOL1
vs. Low level output current IOL
1. 20 Low level output voltage VOL1
vs. Low level output current IOL
0.4
0.4
Ta = 25°C
SDA
0.3
VOL1 [V]
VOL1 [V]
0.3
Ta = 85°C
SDA
0.2
VCCH = 2.3 V
0.1
VCCH = 2.3 V
0.2
0.1
VCCH = 4.5 V
VCCH = 4.5 V
0
0
0
2
3
IOL [mA]
1
4
5
1. 21 Low level output voltage VOL2
vs. Low level output current IOL
0
5
0.10
Ta = −40°C
DO
Ta = 25°C
DO
VOL2 [V]
VOL2 [V]
4
1. 22 Low level output voltage VOL2
vs. Low level output current IOL
0.10
0.05
0.05
VCCH = 2.3 V
VCCH = 4.5 V
VCCH = 2.3 V
VCCH = 4.5 V
0
0
0
200
400
IOL [µA]
0
600
1. 23 Low level output voltage VOL2
vs. Low level output current IOL
200
400
IOL [µA]
600
1. 24 High level output voltage VOH2
vs. High level output current IOH
0.10
5.0
Ta = 85°C
DO
0.05
4.0
VOH2 [V]
VOL2 [V]
2
3
IOL [mA]
1
VCCH = 2.3 V
VCCH = 4.5 V
3.0
Ta = −40°C
VCCH = 4.5 V
DO
VCCL = 4.5 V
VCCL = 2.0 V
2.0
1.0
0
VCCL = 1.5 V
0
0
200
400
IOL [µA]
600
Seiko Instruments Inc.
−600
−400
−200
IOH [µA]
0
43
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
1. 25 High level output voltage VOH2
vs. High level output current IOH
1. 26 High level output voltage VOH2
vs. High level output current IOH
2.0
5.0
Ta = −40°C
VCCH = 2.3 V
DO
4.0
VCCL = 2.0 V
VOH2 [V]
VOH2 [V]
3.0
VCCL = 1.5 V
1.0
3.0
VCCL = 2.0 V
2.0
VCCL = 1.5 V
1.0
0
0
−600
−400
−200
IOH [µA]
−600
0
1. 27 High level output voltage VOH2
vs. High level output current IOH
4.0
VCCL = 2.0 V
VCCL = 1.5 V
1.0
3.0
VCCL = 2.0 V
2.0
0
VCCL = 1.5 V
0
−600
−400
−200
IOH [µA]
−600
0
1. 29 High level output voltage VOH2
vs. High level output current IOH
−400
−200
IOH [µA]
0
1. 30 High level input inversion voltage VIH
vs. Power supply voltage VCCH
3.0
3.0
Ta = 85°C
VCCH = 2.3 V
DO
Ta = 25°C
SDA, SCL, TIMEN
VCCL = 2.0 V
2.0
CMOS input
VIH [V]
VOH2 [V]
VCCL = 4.5 V
Ta = 85°C
VCCH = 4.5 V
DO
1.0
2.0
0
5.0
Ta = 25°C
VCCH = 2.3 V
DO
VOH2 [V]
VOH2 [V]
−400
−200
IOH [µA]
1. 28 High level output voltage VOH2
vs. High level output current IOH
3.0
2.0
VCCL = 4.5 V
Ta = 25°C
VCCH = 4.5 V
DO
VCCL = 1.5 V
1.0
1.0
Low voltage input
0
−600
44
0
−400
−200
IOH [µA]
0
0
2.0
4.0
VCCH [V]
Seiko Instruments Inc.
6.0
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
1. 31 High level input inversion voltage VIH
vs. Ambient temperature Ta
1. 32 Low level input inversion voltage VIL
vs. Power supply voltage VCCH
3.0
3.0
VCCH = 4.5 V
SDA, SCL, TIMEN
2.0
Ta = 25°C
SDA, SCL, TIMEN
2.0
VIL [V]
VIH [V]
CMOS input
1.0
CMOS input
1.0
Low voltage input
Low voltage input
0
0
−50
0
50
0
100
2.0
Ta [°C]
4.0
6.0
VCCH [V]
1. 34 Low power supply detection voltage −VDET
vs. Ambient temperature Ta
1. 33 Low level input inversion voltage VIL
vs. Ambient temperature Ta
3.0
3.0
VCCH = 4.5 V
SDA, SCL, TIMEN
−VDET [V]
VIL [V]
2.0
CMOS input
1.0
Low voltage input
2.0
1.0
0
0
−50
0
50
100
Ta [°C]
−50
0
50
100
Ta [°C]
1. 35 Low power supply release voltage +VDET
vs. Ambient temperature Ta
+VDET [V]
3.0
2.0
1.0
0
−50
0
50
100
Ta [°C]
Seiko Instruments Inc.
45
PROGRAMMABLE PORT CONTROLLER (PORT EXPANDER WITH BUILT-IN E2PROM CIRCUIT)
Rev.1.3_00
S-7760A
2. AC Characteristics
2. 2 Write time tWR vs. Power supply voltage VCCH
2. 1 Maximum operating frequency fMAX.
vs. Power supply voltage VCCH
10000k
3.0
Ta = 25°C
Ta = 25°C
2.0
tWR [ms]
fMAX. [Hz]
1000k
100k
1.0
10k
1k
0
2.0
3.0
4.0
2.0
5.0
3.0
VCCH [V]
2. 3 Write time tWR vs. Ambient temperature Ta
5.0
2. 4 Write time tWR vs. Ambient temperature Ta
3.0
3.0
VCCH = 4.5 V
VCCH = 2.3 V
2.0
tWR [ms]
2.0
tWR [ms]
4.0
VCCH [V]
1.0
1.0
0
0
−50
0
50
−50
100
0
Ta [°C]
50
100
50
100
Ta [°C]
2. 6 SDA output delay time tAA
vs. Ambient temperature Ta
2. 5 SDA output delay time tAA
vs. Ambient temperature Ta
1.0
1.0
VCCH = 4.5 V
VCCH = 2.3 V
tAA [µs]
tAA [µs]
CMOS input
CMOS input
0.5
0.5
Low voltage input
Low voltage input
0
0
−50
0
50
100
Ta [°C]
46
−50
0
Ta [°C]
Seiko Instruments Inc.
1.93±0.02
0.4±0.02
0.60max.
S
ø0.25±0.02
0.06 S
0.5
B
16-(ø0.25)
1
ø0.05 M S A B
2
0.15±0.03
3
4
A
B
C
D
No. HA016-A-P-SD-1.1
TITLE
No.
WLP-16A-A-PKG Dimensions
HA016-A-P-SD-1.1
SCALE
UNIT
Seiko Instruments Inc.
+0.1
ø1.5 -0
ø0.5±0.05
4.0±0.1
2.0±0.05
2.0±0.1
0.18±0.05
0.75±0.05
4.0±0.1
Count mark (ø0.8,Depth 0.2)
(Every 10 pockets)
0.8
0.22
2.32
2.02±0.05
0.6
A4 A3 A2 A1
D4 D3 D2 D1
Feed direction
No. HA016-A-C-S2-1.0
TITLE
No.
WLP-16A-A-C a r r i e r T a p e
HA016-A-C-S2-1.0
SCALE
UNIT
Seiko Instruments Inc.
12.5max.
9.0±0.3
Enlarged drawing in the central part
ø13±0.2
No. HA016-A-R-SD-1.0
TITLE
WLP-16A-A-Reel
HA016-A-R-SD-1.0
No.
SCALE
UNIT
QTY.
3,000
mm
Seiko Instruments Inc.
5.1±0.2
0.65
16
9
1
8
0.17±0.05
0.22±0.08
No. FT016-A-P-SD-1.1
TITLE
TSSOP16-A-PKG Dimensions
No.
FT016-A-P-SD-1.1
SCALE
UNIT
mm
Seiko Instruments Inc.
+0.1
4.0±0.1
ø1.5 -0
0.3±0.05
2.0±0.1
8.0±0.1
1.5±0.1
ø1.6±0.1
(7.2)
4.2±0.2
+0.4
6.5 -0.2
1
16
8
9
Feed direction
No. FT016-A-C-SD-1.1
TITLE
TSSOP16-A-Carrier Tape
FT016-A-C-SD-1.1
No.
SCALE
UNIT
mm
Seiko Instruments Inc.
21.4±1.0
17.4±1.0
+2.0
17.4 -1.5
Enlarged drawing in the central part
ø21±0.8
2.0±0.5
ø13.0±0.2
No. FT016-A-R-SD-1.1
TITLE
TSSOP16-A- Reel
No.
FT016-A-R-SD-1.1
SCALE
UNIT
QTY.
2,000
mm
Seiko Instruments Inc.
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The information described herein is subject to change without notice.
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whose related industrial properties, patents, or other rights belong to third parties. The application circuit
examples explain typical applications of the products, and do not guarantee the success of any specific
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