Sony BKPF-L752 User Manual

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4-5
BKPF-L752
IC
SSM-2142P (PMI)
PCF8574AT (PHILIPS)
TL7705ACPS (TI)
TL7705ACPSR
V
CC
GND
SENSE 
IN
OUT (1)
OUT (2)
)
SENSE
RESIN
C
T
V
REF
OUT (1)
OUT (2)
V
REF OUT
RESIN
 
IN
C
T IN
REF
+
2.5 V
V
CC
*
*
1
5
6
7
2
3
OPEN COLLECTOR
7
2
3
1
6
5
1
2
3
4
8
7
6
5
POWER VOLTAGE SUPERVISOR
—TOP VIEW—
1
2
3
4
_
FORCE
_
SENSE
V
 IN
+
FORCE
+
SENSE
GND
8
7
6
5
V
CC
V
EE
BALANCED LINE DRIVER
—TOP VIEW—
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A0
IN
A1
IN
A2
IN
P0
I/O
P1
I/O
P2
I/O
P3
I/O
SDA
SCL
INT
P7
I/O
P6
I/O
P5
I/O
P4
I/O
13
4
5
6
7
9
10
11
12
15
INT
P0
P1
P2
P3
P4
P5
P6
P7
SDA
A0
A1
A2
SCL
1
2
3
14
INPUT
A0 - A2
SCL
OUTPUT
INT
SDA
INPUT/OUTPUT
P0 - P7
;  ADDRESS  INPUTS
;  SYSTEM  CLOCK  LINE
;  INTERRUPT  OUTPUT
;  SERIAL  DATA  LINE
;  8-BIT QUASI-BIDIRECTIONAL  I/O  PORT
GND
V
DD
C-MOS  REMOTE  8-BIT  I/O  EXPANDER
—TOP VIEW—
INTERRUPT
LOGIC
INPUT
FILTER
POWER-ON
RESET
LP  FILTER
SHIFT
REGISTER
I/O
PORTS
8-BIT
INT
13
A0
1
A1
2
A2
3
SCL
14
SDA
15
VDD
16
VSS
8
PCF8574
PCF8574A
P0
4
P1
5
P2
6
P3
7
P4
9
P5
10
P6
11
P7
12
write pulse
read pulse
I
2
C  BUS
CONTROL