M30622M4 MITSUBISHI [Mitsubishi Electric Semiconductor], M30622M4 Datasheet - Page 9

• Manufacturer Part Number: M30622M4
• Description: SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

Pin Description
Pin Description
P8
P8
P10
ALE,
RDY
P6
P7
P8
P8
P9
WRL / WR,
WRH / BHE,
RD,
BCLK,
HLDA,
HOLD,
P5
Pin name
0
0
6
7
0
0
5
0
,
,
0
to P7
to P8
to P9
to P6
to P5
to P10
7
4
7
7
7
,
7
I/O port P5
I/O port P8
I/O port P8
I/O port P10
I/O port P6
I/O port P7
I/O port P9
Signal name
5
Output
Input
Input/output
Input/output
Input/output
Input/output
Input/output
Input/output
Input
Input/output
Input/output
Output
Output
Output
Output
Output
Input
I/O type
Output WRL, WRH (WR and BHE), RD, BCLK, HLDA, and ALE
signals. WRL and WRH, and BHE and WR can be switched using
software control.
With a 16-bit external data bus, data is written to even addresses
when the WRL signal is “L” and to the odd addresses when the WRH
signal is “L”. Data is read when RD is “L”.
Data is written when WR is “L”. Data is read when RD is “L”. Odd
addresses are accessed when BHE is “L”. Use this mode when using
an 8-bit external data bus.
While the input level at the HOLD pin is “L”, the microcomputer is
placed in the hold state. While in the hold state, HLDA outputs a “L”
level. ALE is used to latch the address. While the input level of the
RDY pin is “L”, the microcomputer is in the ready state.
This is an 8-bit I/O port equivalent to P6 (P7
open-drain output). Pins in this port also function as timer A
timer B5 or UART2 I/O pins as selected by software.
This is an 8-bit I/O port equivalent to P6. Pins in this port also function
as SI/O3, 4 I/O pins, Timer B0–B4 input pins, D-A converter output pins,
A-D converter extended input pins, or A-D trigger input pins as selected
by software.
This is an 8-bit I/O port equivalent to P6. Pins in this port also function
as A-D converter input pins. Furthermore, P10
input pins for the key input interrupt function.
This is an 8-bit I/O port equivalent to P0. In single-chip mode, P5
this port outputs a divide-by-8 or divide-by-32 clock of X
the same frequency as X
This is an 8-bit I/O port equivalent to P0. When used for input in single-
chip, memory expansion, and microprocessor modes, the port can be
set to have or not have a pull-up resistor in units of four bits by
software. Pins in this port also function as UART0 and UART1 I/O pins
as selected by software.
P8
Using software, they can be made to function as the I/O pins for timer
A4 and the input pins for external interrupts. P8
using software to function as the I/O pins for a sub clock generation
circuit. In this case, connect a quartz oscillator between P8
pin) and P8
for NMI. The NMI interrupt is generated when the input at this pin
changes from “H” to “L”. The NMI function cannot be cancelled using
software. The pull-up cannot be set for this pin.
0
WRL, WRH, and RD selected
WR, BHE, and RD selected
to P8
4
, P8
7
(X
6
CIN
, and P8
pin). P8
7
CIN
are I/O ports with the same functions as P6.
5
is an input-only port that also functions
as selected by software.
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Function
0
and P7
4
6
–P10
and P8
Mitsubishi microcomputers
M16C / 62 Group
1
7
are N channel
also function as
IN
7
can be set
or a clock of
6
0
(X
–A
COUT
3
,
7
in
9