![](http://datasheet.mmic.net.cn/330000/MB89803_datasheet_16437145/MB89803_7.png)
MB89800 Series
7
I
PIN DESCRIPTION
*1 : FPT-100P-M05
*2 : FPT-100P-M06/MQP-100C-P01
(Continued)
Pin no.
Pin name
Circuit
type
Function
LQFP*
1
MQFP/
QFP*
2
54
57
X0
A
Clock crystal oscillator pins
55
58
X1
51
54
MOD0
B
Operating mode selection pin. Connect directly to V
SS
.
52
55
MOD1
53
56
RST
C
This pin is an N-ch open-drain type with a pull-up resistor, and a
hysteresis input type. “L” is output from this pin by an internal reset
source (optional function). The internal circuit is initialized by the
input of “L”.
85 to 78 88 to 81
P00/SEG54 to
P07/SEG61
D
General-purpose N-ch open-drain I/O ports. Also serve as an LCD
controller/driver segment output.
The port and segment output are switched by mask option in 8-bit
unit.
77 to 70 80 to 73
P10/SEG62 to
P17/SEG69
D
General-purpose N-ch open-drain I/O ports. Also serve as an LCD
controller/driver segment output.
The port and segment output are switched by mask option in 4 to
1-bit unit.
69 to 64 72 to 67 P20 to P25
F
General-purpose N-ch open-drain I/O ports. A pull-up resistor
option is provided.
63
66
P30/INT0
I
General-purpose input port. The input is CMOS input.
Also serves as an external interrupt input (INT0), in this case, the
input is hysteresis input.
A pull-up resistor option is provided.
62 to 60 65 to 63 P31 to P33
H
General-purpose input ports. These pins are a CMOS input type.
A pull-up resistor option is provided.
59
62
P40
E
General-purpose I/O port. A pull-up resistor option is provided.
58
61
P41/PWM
E
General-purpose I/O port. A pull-up resistor option is provided.
Also serves as PWM timer toggle output (PWM).
57
60
P42/PWC/
INT1
E
General-purpose I/O port. A pull-up resistor option is provided.
Also serves as pulse width count timer input (PWC) and an exter-
nal interrupt input (INT1).
The PWC and INT1 input is hysteresis input.
50
53
P43/SI
E
General-purpose I/O port. A pull-up resistor option is provided.
Also serves as serial I/O and a UART data input (SI).
The SI input is hysteresis input.
49
52
P44/SO
E
General-purpose I/O port. A pull-up resistor option is provided.
Also serves as a serial I/O and a UART data output (SO).