MB91F127/F128
(Continued)
No.
Pin name
Input/output
circuit type
Description
79
PF0/TCI0
[TCI0] External clock input of timer 0.
D
[PF0] General input/output port
80
SI2/PF1
[SI2] Data input of UART2.This function is active when data in-
D
put of UART2 is allowed.
[PF1] General input/output port
81
SO2/PF2
[SO2] Data output of UART2.This function is active when data
output of UART2 is allowed.
D
[PF2] General input/output port. This function is active when
data output of UART2 is disallowed.
82
SC2/PF3/ATG
[SC2] Clock input of UART2
[ATG]External trigger input of A/D converter The input is used
D
whenever necessary if a function concerned is selected.
Output of other functions must be suspended if not on purpose.
[PF3] General input/output port
83 to 90
AN0/PJ0
AN1/PJ1
AN2/PJ2
AN3/PJ3
AN4/PJ4
AN5/PJ5
AN6/PJ6
AN7/PJ7
[AN0 to AN7] Analog input of A/D converter.
This function is active when analog input is specified in AIC reg-
ister.
E
[PJ0 through PJ7] General input/output ports
91
AVCC

VCC power supply for A/D converter
92
AVRH
Reference voltage of A/D converter (high potential side). Be

sure to turn on or off this terminal with a potential higher than
AVRH applied to VCC.
93
AVSS/AVRL

A/D converter VSS power source and reference voltage (low po-
tential side).
94 to 96
VCC

Power sources of digital circuits. Be sure to connect power
source to all terminals when the device is used.
97 to 100
VSS

Ground level of digital circuits.
Note : Most of the above terminals multiplex inputs and outputs of I/O ports and resources, as indicated as “XXXX/
PXXâ€. If the outputs of ports and resources conflict with each other on the terminals, resources take prefer-
ences.
8