
9
MB90F243H
Pin no.
Pin name
Circuit
type
Function
TQFP-80*
56
P54
F
General-purpose I/O port
This function is valid in external bus eight-bit mode, or when
WRH pin output is disabled.
WRH
Write strobe output pin for the upper eight bits of the data bus
This function is valid in modes where the external bus
16-bit mode is enabled, and WRH pin output is enabled.
57
P55
F
General-purpose I/O port
This function is valid when WRL pin output is disabled.
WRL / WR
Write strobe output pin for the lower eight bits of the data bus
This function is valid WRL pin output is enabled.
58
P56
F
General-purpose I/O port
RD
Read strobe output pin for the data bus
59
P57
F
General-purpose I/O port
ASR3
16-bit input capture #3 data input pin
During 16-bit input capture #3 input operations, these inputs
may be used at any time; therefore, it is necessary to stop
output by other functions on this pin, except when using them
for output deliberately.
INT3
DTP/external interrupt #3 data input pin
During DTP/external interrupt #3 input operations, these inputs
may be used at any time; therefore, it is necessary to stop
output by other functions on this pin, except when using them
for output deliberately.
30,
31,
33,
34,
35,
36
P60,
P61,
P62,
P63,
P66,
P67
I
N-ch open-drain type I/O ports
When bits corresponding to the ADER are set to “0”, reading
instructions other than the read-modify-write group returns the
pin level. The value written on the data register is output to this
pin directly.
AN0,
AN1,
AN2,
AN3,
AN6,
AN7
8/10-bit A/D converter analog input pins
Use this function after setting bits corresponding to the ADER
to “1” and setting corresponding bits of the data register to “1”.
43 to 45
P70 to P72
G
General-purpose I/O port
This function is valid when the reload timer #0, #1, and #2
output is disabled.
TOT0 to TOT2
16-bit timer output pins
This function is valid when the 16-bit timer #0, #1, and #2
output is enabled.
46
P73
G
General-purpose I/O port
This function is valid when the SSI #1 clock output is disabled.
SCK1
SSI #1 clock output I/O pin
*: FPT-80P-M15
(Continued)