I/O Pins And Pin Functions - Fujitsu Semiconductor Controller MB89950/950A Hardware Manual

CHAPTER 1 OVERVIEW
1.7

I/O Pins and Pin Functions

Table 1.7-1 "Pin description" and Table 1.7-2 "Pin description for external ROM (for
MB89PV950 only)" list the MB89950/950A series I/O pins and their functions. Table 1.7-3
"I/O circuit type" lists the I/O circuit types.
The letter in the "I/O circuit type" column in Table 1.7-1 "Pin description" refer to the
letter in the "Type" column Table 1.7-3 "I/O circuit type".
I I/O pins and pin functions
Table 1.7-1 Pin description (1/2)
Pin no.
*1 *2
LQFP MQFP
22 23
23 24
21 22
19 20
48 to 41 49 to 42
40 to 33 41 to 34
32 to 27 33 to 28
14 to 13 15 to 14
12 to 11 13 to 12
15 16
12
I/O
Pin name circuit
type
X0
A
X1
MODA B
RST C
P00/SEG20
to D
P07/SEG27
P10/SEG28
to D
P17/SEG35
P20/SEG36
to D
P25/SEG41
P30 to P31 F
P32/V1 to
H
P33/V2
P40 E
Clock oscillator pins.
Operation mode selection pin.
This pin is connected directly to V
Reset I/O pin.
This pin consists of an N-ch open-drain output with a pull-up
resistor and hysteresis input. A "LOW" level is output from this
pin. A "LOW" voltage on this port generates a RESET condition.
N-channel open-drain type general-purpose I/O ports.
Also serve as LCD controller/driver segment outputs.
Switching between port output and segment driver output is
performed by the mask option.
N-channel open-drain type general-purpose I/O ports.
Also serve as LCD controller/driver segment outputs.
Switching between port output and segment driver output is
performed by the mask option.
N-channel open-drain type general-purpose I/O ports.
Also serve as LCD controller/driver segment outputs.
Switching between port output and segment driver output is
performed by the mask option.
N-channel open-drain type general-purpose I/O ports.
N-channel open-drain type general-purpose I/O ports.
Also serve as LCD controller/driver power supply.
General-purpose I/O port.
A pull-up resistor option is provided.
Function
with pull-down resistor.
SS