MB89930A Series
6
s PIN DESCRIPTION
(Continued)
*1: FPT-30P-M02
*2: MQP-48C-P01
Pin No.
Pin name
Circuit
type
Function
SSOP*1 MQFP*2
832
X0
A
Pins for connecting the crystal resonator for the main clock. To
use an eternal clock, input the signal to X0 and leave X1 open.
933
X1
529
MOD0
B
Memory access mode setting input pins.
Connect the pin directly to Vss.
630
MOD1
731
RST
C
Reset I/O pin.
This pin serves as an N-channel open-drain output with pull-up
resistor and a hysteresis input as well. The pin outputs the "L"
signal (optionally) in response to an internal reset request. Al-
so, it initializes the
internal circuit upon input of the "L" signal.
26 to 29 10 to 13
P00/INT20/AN4
to P03/INT23/AN7
G
General-purpose CMOS I/O ports.
These pins also serve as an input (wake-up input) of external
interrupt 2 or as an A/D converter analog input. The input of ex-
ternal interrupt 2 is a hysteresis input.
1 to 4
25 to 28
P04/INT24 to
P07/INT27
D
General-purpose CMOS I/O ports.
These pins also serve as an input (wake-up input) of external
interrupt 2. The input of external interrupt 2 is a hysteresis in-
put.
19
5
P30/UCK/SCK
D
General-purpose CMOS I/O ports.
This pin also serves as the clock I/O pin for the UART or 8-bit
serial I/O. The resource is a hysteresis input.
18
4
P31/UO/SO
E
General-purpose CMOS I/O ports.
This pin also serves as the data output pin for the UART or 8-
bit serial I/O.
17
3
P32/UI/SI
D
General-purpose CMOS I/O ports.
This pin also serves as the data input pin for the UART or 8-bit
serial I/O. The resource is a hysteresis input.
15
2
P33/EC
D
General-purpose CMOS I/O ports.
This pin also serves as the external clock input pin for the 8/16-
bit capture timer/counter. The resource is a hysteresis input.
14
1
P34/TO/INT10
D
General-purpose CMOS I/O ports.
This pin also serves as the output pin for the 8/16-bit capture
timer/counter or as the input pin for external interrupt 1. The re-
source is a hysteresis input.
13, 12
48,35
P35/INT11,
P36/INT12
D
General-purpose CMOS I/O ports.
These pins also serve as the input pin for external
interrupt 1. The resource is a hysteresis input.
11
34
P37/BZ/PPG
E
General-purpose CMOS I/O ports.
This pin also serves as the buzzer output pin or the 12-bit pro-
grammable pulse generator output.