M30622MA-XXXFP RENESAS [Renesas Technology Corp], M30622MA-XXXFP Datasheet - Page 563

• Manufacturer Part Number: M30622MA-XXXFP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY
• Manufacturer: RENESAS [Renesas Technology Corp]

548
External ROM
Table 6.2.2. Pin Description (2)
ALE,
RDY
P7
P8
P8
P8
P8
P9
P10
WRL / WR,
WRH / BHE,
RD,
BCLK,
HLDA,
HOLD,
P6
Pin name
0
0
6
7
0
0
5
,
,
0
to P7
to P8
to P9
to P6
to P10
4
7
7
7
,
7
ALE,
RDY
WRL / WR,
WRH / BHE,
RD,
BCLK,
HLDA,
HOLD,
I/O port P8
I/O port P8
I/O port P9
I/O port P10
I/O port P6
I/O port P7
Signal name
5
Output
Input
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. Pins in this port also function
as timer A0–A3, timer B5, or UART2 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 canceled using
software. The pull-up cannot be set for this pin.
This is an 8-bit I/O port equivalent to P6. Pins in this port also function
as SI/O3,4 I/O pin, timer B0–B2 input pins, D-A converter output pins,
A-D converter’s 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 P1. 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.
0
WRL, WRH, and RD selecte
WR, BHE, and RD selected
to P8
4
, P8
7
(X
6
CIN
, and P8
pin). P8
7
are I/O ports with the same functions as P6.
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
5
is an input-only port that also functions
Function
4
6
Mitsubishi microcomputers
–P10
M16C / 62 Group
and P8
7
also function as
7
can be set
6
(X
COUT