
14
CHAPTER 1 OVERVIEW
17
P33/SCL2/UCK3
G
General-purpose N-ch open-drain I/O port.
This pin is also used for SCL2 I/O of I
2
C and UCK3 I/O of
UART.
18
P34/SDA2/UI3
General-purpose N-ch open-drain I/O port.
This pin is also used for SDA2 I/O of I
2
C and UI3 input of
UART.
19
P35/U03
H
General-purpose N-ch open-drain I/O port.
This pin is also used for UO3 output of UART.
20
P40/SCL3/UCK1
G
General-purpose N-ch open-drain I/O port.
This pin is also used for SCL/UCK1 I/O of a bridge circuit.
21
P41/SDA3/UI1
General-purpose N-ch open-drain I/O port.
This pin is also used for SDA3/UI1 I/O of a bridge circuit.
22
P42/SCL4/UCK2
General-purpose N-ch open-drain I/O port.
This pin is also used for SCL4/UCK2 I/O of a bridge circuit.
23
P43/SDA4/UI2
General-purpose N-ch open-drain I/O port.
This pin is also used for SDA4/UI2 I/O of a bridge circuit.
24
BVcc
–
Power pin of a bridge circuit
25
P50/ALR1
B
General-purpose I/O port.
This pin is also used for alarm signal output when battery 1
runs down.
26
P51/ALR2
General-purpose I/O port.
This pin is also used for alarm signal output when battery 2
runs down.
27
P52/ALR3
General-purpose I/O port.
This pin is also used for alarm signal output when battery 3
runs down.
28
P53/AC0
B
General-purpose I/O port.
This pin is also used for AC power set signal output.
29
P54/OFB1
B
General-purpose I/O port.
This pin is also used for battery 1 discharge control signal
output of the comparator.
30
P55/OFB2
General-purpose I/O port.
This pin is also used for battery 2 discharge control signal
output of the comparator.
31
P56/OFB3
General-purpose I/O port.
This pin is also used for battery 3 discharge control signal
output of the comparator.
Table 1.7-1 Pin Description (Continued)
Pin No.
Pin name
I/O Circuit
type
Function