
MB91340/MB91V340
14
* : Shaded pins are only present on the MB91V340.
(Continued)
Pin no.
Pin name
I/O
circuit
type
Function
MB91340 MB91V340
72 to 79
86 to 89,
91 to 92,
94 to 95
OC0 to OC7
C
[OC0-OC7] Output compare output pins.
PO0 to PO7
[PO0-PO7] General purpose input/output ports. These pins can
be used as ports when the output from the output compare unit is
not used.
81 to 88
96 to 98,
100 to 104
AIN0, BIN0,
AIN1, BIN1,
AIN2, BIN2,
AIN3, BIN3
C
[AIN0, BIN0, AIN1, BIN1, AIN2, BIN2, AIN3, BIN3] Up/down timer
inputs. These inputs are used continuously when input is en-
abled. In this case, do not output to these ports unless doing so
intentionally.
PN0 to PN7
[PN0-PN7] General purpose input/output ports.
89 to 92
105 to 106,
108,
110
ZIN0 to
ZIN3
C
[ZIN0-ZIN3] Up/down timer inputs. These inputs are used contin-
uously when input is enabled. In this case, do not output to these
ports unless doing so intentionally.
PM0 to PM3
[PM0-PM3] General purpose input/output ports.
93
111
SDA
C
[SDA] Data input/output pin for the I2C bus. The pin has this func-
tion when I2C is enabled in standard mode. In this case, do not
output to this port unless doing so intentionally. (Open drain out-
put)
SDAI
[SDAI] Data input pin for the I2C bus. The pin has this function
when I2C is enabled in terminal split mode. In this case, do not
output to this port unless doing so intentionally.
PL0
[PL0] General purpose input/output port. The pin operates as a
port when I2C operation is disabled.
94
112
SDAO
C
[SDAO] Data output pin for the I2C bus. The pin operates as a
dedicated data output when I2C is enabled in terminal split mode.
PL1
[PL1] General purpose input/output port. The pin operates as a
port when I2C terminal split mode operation is disabled.
95
113
SCL
C
[SCL] Clock input/output pin for the I2C bus. The pin has this func-
tion when I2C is enabled in standard mode. In this case, do not
output to this port unless doing so intentionally. (Open drain out-
put)
SCLI
[SCLI] Clock input pin for the I2C bus. The pin has this function
when I2C is enabled in terminal split mode. In this case, do not
output to this port unless doing so intentionally.
PL2
[PL2] General purpose input/output port. The pin operates as a
port when I2C operation is disabled.
96
114
SCLO
C
[SCLO] Clock output pin for the I2C bus. The pin is used as the
clock output when I2C is enabled in terminal split mode.
PL3
[PL3] General purpose input/output port. The pin operates as a
port when I2C terminal split mode operation is disabled.