
1.6 Pin Description
7
1.6 Pin Description
Table 1.6.1 MB90660A Pin Description (1)
Pin No.
Pin Name
Circuit Type
Function
QFP
SH-DIP
22
23
30
31
X0
X1
A (oscillator)
Crystal oscillator pins (32 MHz)
25 to 32
33 to 40
P00 to P07
B (CMOS)
General-purpose I/O ports
33 to 40
41 to 48
P10 to P17
B (CMOS)
General-purpose I/O ports
41 to 44
49 to 52
P20 to P23
B (CMOS)
General-purpose I/O ports
45 to 48
53 to 56
P24 to P27
G (CMOS)
General-purpose I/O ports, enabled when reload timer
output is disabled.
TIM0 to
TIM3
I/O pins for reload timers 0 to 4. When used for reload
timer input pin, these pins remain set for input functions
at all times, therefore output from all other functions
must be disabled unless intentionally executed. When
used for reload timer output, these pins are active when
output functions are enabled.
INT4 to INT7
External interrupt request pins. When external interrupt
functions are enabled, these pins remain set for input
functions at all times, therefore output from all other
functions must be disabled unless intentionally exe-
cuted.
14 to 17
22 to 25
P30 to P33
B (CMOS)
General-purpose I/O port
59
3
P40
E (CMOS/H)
General-purpose I/O port. This function is enabled at all
times.
SIN
UART serial data input pin. When UART input opera-
tion is in progress, this pin remains set for input func-
tions at all times, therefore output from all other
functions must be disabled unless intentionally exe-
cuted.
60
4
P41
E (CMOS/H)
General-purpose I/O port. This function is enabled
when UART serial data output is disabled.
SOT
UART serial data output pin. This function is enabled
when UART serial data output is enabled.