M34282 Datasheet, PDF (1/69 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4282 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
REJ03B0084-0133Z
Rev.1.33
2004.03.18
DESCRIPTION
The 4282 Group enables fabrication of 8 × 7 key matrix and has
the followin timers;
• an 8-bit timer which can be used to set each carrier wave and
has two reload register
• an 8-bit timer which can be used to auto-control and has a
reload register.
FEATURES
• Number of basic instructions ............................................. 68
• Minimum instruction execution time ............................ 8.0 µs
(at f(XIN) = 4.0 MHz, system clock = f(XIN)/8)
• Supply voltage ................................................. 1.8 V to 3.6 V
• Subroutine nesting ..................................................... 4 levels
• Timer
Timer 1 ................................................................... 8-bit timer
(This has a reload register and carrier wave output auto-control
function)
Timer 2 ................................................................... 8-bit timer
(This has two reload registers and carrier wave output function)
• Logic operation function (XOR, OR, AND)
• RAM back-up function
• Key-on wakeup function (ports D4–D7, E0–E2, G0–G3) .... 11
• I/O port (ports D, E, G, CARR) .......................................... 16
• Oscillation circuit ..................................... Ceramic resonance
• Watchdog timer
• Power-on reset circuit
• Voltage drop detection circuit ......................... Typical:1.50 V
(system reset)
APPLICATION
Various remote control transmitters
Part number
M34282M1-XXXGP
M34282M2-XXXGP
M34282E2GP
ROM (PROM) size
(× 9 bits)
1024 words
2048 words
2048 words
RAM size
(× 4 bits)
48 words
64 words
64 words
Package
20P2E/F-A
20P2E/F-A
20P2E/F-A
ROM type
Mask ROM
Mask ROM
One Time PROM
PIN CONFIGURATION (TOP VIEW)
VSS
E2
E1
XI N
XOUT
E0
G0
G1
G2
G3
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
Outline 20P2E/F-A
Rev.1.33 Mar 18, 2004 page 1 of 67
VDD
CARR
D0
D1
D2
D3
D4
D5
D6
D7