M34282MX-XXXGP View Datasheet(PDF) - Renesas Electronics

Part Name

Description

Manufacturer

M34282MX-XXXGP

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

Renesas Electronics 

4282 Group

PERFORMANCE OVERVIEW

Parameter

Function

Number of basic instructions

68

Minimum instruction execution time 8.0 µs (f(XIN) = 4.0 MHz, system clock = f(XIN)/8, VDD = 3 V)

Memory sizes ROM M34282M2/E2 2048 words ✕ 9 bits

M34282M1 1024 words ✕ 9 bits

RAM M34282M2/E2 64 words ✕ 4 bits

M34282M1 48 words ✕ 4 bits

Input/Output D0–D3 Output

Four independent output ports

ports

D4–D7 I/O

Four independent I/O ports with the pull-down function

E0–E2 Input

3-bit input port with the pull-down function

E0, E1 Output

2-bit output port (E0, E1)

G0–G3 I/O

4-bit I/O port with the pull-down function

CARR Output

1-bit output port; CMOS output

Timer

Timer 1

8-bit timer with a reload register

Timer 2

8-bit timer with two reload registers

Subroutine nesting

4 levels (However, only 3 levels can be used when the TABP p instruction is executed)

Device structure

CMOS silicon gate

Package

20-pin plastic molded SSOP (20P2E/F-A)

Operating temperature range

–20 °C to 85 °C

Supply voltage

1.8 V to 3.6 V

Power

Active mode

400 µA

dissipation

(f(XIN) = 4.0 MHz, system clock = f(XIN)/8, VDD = 3 V)

(typical value) RAM back-up mode 0.1 µA (at room temperature, VDD = 3 V)

PIN DESCRIPTION

Pin

Name

Input/Output

Function

VDD

Power supply

—

Connected to a plus power supply.

VSS

Ground

—

Connected to a 0 V power supply.

XIN

System clock input

Input I/O pins of the system clock generating circuit. Connect a ceramic resonator

XOUT

System clock output

between pins XIN and XOUT. The feedback resistor is built-in between pins XIN

Output

and XOUT.

D0–D3

Output port D

Output Each pin of port D has an independent 1-bit wide output function. The output

structure is P-channel open-drain.

D4–D7

I/O port D

I/O 1-bit I/O port. For input use, set the latch of the specified bit to “0.” When the built-

in pull-down transistor is turned on, the key-on wakeup function using “H” level

sense and the pull-down transistor become valid. The output structure is P-channel

open-drain.

E0–E2

I/O port E

Output 2-bit (E0, E1) output port. The output structure is P-channel open-drain.

Input 3-bit input port. For input use (E0, E1), set the latch of the specified bit to “0.”

When the built-in pull-down transistor is turned on, the key-on wakeup function

using “H” level sense and the pull-down transistor become valid. Port E2 has an

input-only port and has a key-on wakeup function using “H” level sense and pull-

down transistor.

G0–G3

I/O port G

I/O 4-bit I/O port. For input use, set the latch of the specified bit to “0.” The output structure

is P-channel open-drain. When the built-in pull-down transistor is turned on, the key-

on wakeup function using “H” level sense and pull-down transistor become valid.

CARR

Carrier wave output Output Carrier wave output pin for remote control. The output structure is CMOS circuit.

for remote control

Rev.1.33 Mar 18, 2004 page 3 of 67

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