
MB91340/MB91V340
15
* : Shaded pins are only present on the MB91V340.
(Continued)
Pin no.
Pin name
I/O
circuit
type
Function
MB91340 MB91V340
97 to 98
115 to 116 PL4 to PL5
C
[PL4-PL5] General purpose input/output ports.
99
117
UCO
C
[UCO] Pulse output for 8-bit up counter. The pin outputs pulses
when pulse output is enabled for the 8-bit up counter.
PL6
[PL6] General purpose input/output port. The pin operates as a
port when output is disabled for the 8-bit up counter.
101 to
104
118,
120 to 121,
123
TIN0 to
TIN3
C
[TIN0-TIN3] Reload timer inputs. These inputs are used continu-
ously when the corresponding timer input is enabled. In this case,
do not output to these ports unless doing so intentionally.
PK0 to PK3
[PK0-PK3] General purpose input/output ports.
105 to
108
124 to 127
TOT0 to
TOT3
C
[TOT0-TOT3] Reload timer output ports. The pins operate as re-
load timer output ports when timer output is enabled.
PK4 to PK7
[PK4-PK7] General purpose input/output ports. The pins operate
as ports when timer output is disabled.
111 to
118
128 to 129,
131 to 136
INT0 to
INT7
I
[INT0-INT7] External interrupt inputs. These inputs are used con-
tinuously when the corresponding external interrupt is enabled. In
this case, do not output to these ports unless doing so intentional-
ly.
PJ0 to PJ7
[PJ0-PJ7] General purpose input/output ports.
119
138
SI0
C
[SI0] UART0 data input pin. This input is used continuously when
UART0 is performing input. In this case, do not output to this port
unless doing so intentionally.
PI0
[PI0] General purpose input/output port.
120
139
SO0
C
[SO0] UART0 data output pin. The pin has this function when
UART0 data output is enabled.
PI1
[PI1] General purpose input/output port. The pin has this function
when UART0 data output is disabled.
121
141
SCK0
C
[SCK0] UART0 clock input/output pin. The pin has this function
when UART0 clock output is enabled.
PI2
[PI2] General purpose input/output port. The pin has this function
when UART0 clock output is disabled.
122
142
SI1
C
[SI1] UART1 data input pin. This input is used continuously when
UART1 is performing input. In this case, do not output to this port
unless doing so intentionally.
PI3
C
[PI3] General purpose input/output port.
123
143
SO1
C
[SO1] UART1 data output pin. The pin has this function when
UART1 data output is enabled.
PI4
[PI4] General purpose input/output port. The pin has this function
when UART1 data output is disabled.