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M37544 Datasheet(PDF) 1 Page - Renesas Technology Corp

Part No. M37544
Description  SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
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Maker  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
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 1 page
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DESCRIPTION
The 7544 Group is the 8-bit microcomputer based on the 740 fam-
ily core technology.
The 7544 Group has a serial I/O, 8-bit timers, a 16-bit timer, and
an A/D converter, and is useful for control of home electric appli-
ances and office automation equipment.
FEATURES
Basic machine-language instructions ...................................... 71
The minimum instruction execution time ......................... 0.25 µs
(at 8 MHz oscillation frequency, double-speed mode for the
shortest instruction)
Memory size ROM ......................................................... 8 K bytes
RAM ........................................................ 256 bytes
Programmable I/O ports ........................................................... 25
Interrupts ................................................. 12 sources, 12 vectors
Timers ............................................................................. 8-bit ✕ 2
...................................................................................... 16-bit ✕ 1
Serial I/O ...................... 8-bit ✕ 1 (UART or Clock-synchronized)
A/D converter ................................................. 8-bit ✕ 6 channels
Clock generating circuit ............................................. Built-in type
(low-power dissipation by an on-chip oscillator enabled)
(connect to external ceramic resonator or quartz-crystal oscilla-
tor permitting RC oscillation)
Watchdog timer ............................................................ 16-bit ✕ 1
Power source voltage
XIN oscillation frequency at ceramic/quartz-crystal oscillation, in
double-speed mode
At 8 MHz .................................................................... 4.5 to 5.5 V
XIN oscillation frequency at ceramic/quartz-crystal oscillation, in
high-speed mode
At 8 MHz .................................................................... 4.0 to 5.5 V
XIN oscillation frequency at RC oscillation
At 4 MHz .................................................................... 4.0 to 5.5 V
Power dissipation ........................................... 22.5mW(standard)
Operating temperature range ................................... –20 to 85 °C
APPLICATION
Office automation equipment, factory automation equipment,
home electric appliances, consumer electronics, etc.
PIN CONFIGURATION (TOP VIEW)
Fig. 1 Pin configuration (32P4B type)
Package type : 32P4B
P12/SCLK
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
P13/SRDY
P14/CNTR0
P20/AN0
P21/AN1
P22/AN2
P23/AN3
P24/AN4
P25/AN5
VREF
CNVSS
VCC
XIN
XOUT
VSS
RESET
P11/TXD
P10/RXD
P07(LED7)
P06(LED6)
P05(LED5)
P04(LED4)
P03(LED3)/TXOUT
P02(LED2)
P01(LED1)
P00(LED0)/CNTR1
P34(LED12)/INT1
P33(LED11)
P32(LED10)
P31(LED9)
P30(LED8)
P37(LED13)/INT0
Rev.1.04
2004.06.08
page 1 of 66
REJ03B0012-0104Z
REJ03B0012-0104Z
Rev.1.04
2004.06.08
7544 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER




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