M37480MX Datasheet, PDF (1/97 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

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MITSUBISHI MICROCOMPUTERS
7480/7481 GROUP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
DESCRIPTION
The 7480/7481 group is the single-chip microcomputer adopting
the silicon gate CMOS process. In addition to its simple instruction
set, the ROM, RAM, and I/O addresses are placed in the same
memory space.
Having built-in serial I/O, A-D converter, and watchdog timer, this
single-chip microcomputer is useful for control of automobiles, of-
fice automation equipment and home electric appliances.
The 7480/7481 group includes multiple types which differ in the
memory type, size, and package.
FEATURES
qNumber of basic machine language instructions ..................... 71
qMinimum instruction execution time ................................... 0.5 µs
(at 8 MHz clock input oscillation frequency)
qMemory size ROM ........................................... 4 K to 16 K bytes
RAM ............................................ 128 to 448 bytes
qProgrammable I/O ports .................................... 18 (7480 group)
(P0, P1, P4, P5)
24 (7481 group)
qInput ports ............................................................ 8 (7480 group)
(P2, P3)
12 (7481 group)
qBuilt-in programmable pull-up transistors (P0, P1)
qBuilt-in clamp diodes ............................................ 2 (7480 group)
(P4, P5)
8 (7481 group)
qInterrupt ................................................... 14 sources, 13 vectors
qTimer X, Y ..................................................................... 16-bit ! 2
qTimer 1, 2 ....................................................................... 8-bit ! 2
qSerial I/O ....................... 8-bit x 1 (UART or clock-synchronized)
qA-D converter ............................ 8-bit x 4 channels (7480 group)
8-bit x 8 channels (7481 group)
qBuilt-in watchdog timer
qPower source voltage ................................................ 2.7 to 4.5 V
(at [2.2 VCC-2] MHz clock input oscillation frequency)
4.5 to 5.5 V
(at 8 MHz clock input oscillation frequency)
qPower dissipation .............................................................. 35 mW
(at 8 MHz clock input oscillation frequency and 5 V power
source voltage)
APPLICATIONS
Automobiles, office automation equipment, home electric appli-
ances, etc.
PIN CONFIGURATION
P17/SRDY
P16/SCLK
P15/TXD
P14/RXD
P13/T1
P12/T0
P11
P10
P23/IN3
P22/IN2
P21/IN1
P20/IN0
VREF
XIN
XOUT
VSS
1
32
2
31
3
30
4
29
5
28
6
27
7
26
8
25
9
24
10
23
11
22
12
21
13
20
14
19
15
18
16
17
Outline 32P4B
P07
P06
P05
P04
P03
P02
P01
P00
P41/CNTR1
P40/CNTR0
P33
P32
P31/INT1
P30/INT0
RESET
VCC
P17/SRDY
P16/SCLK
P15/TXD
P14/RXD
P13/T1
P12/T0
P11
P10
P23/IN3
P22/IN2
P21/IN1
P20/IN0
VREF
XIN
XOUT
VSS
1
32
2
31
3
30
4
29
5
28
6
27
7
26
8
25
9
24
10
23
11
22
12
21
13
20
14
19
15
18
16
17
Outline 32P2W-A
P07
P06
P05
P04
P03
P02
P01
P00
P41/CNTR1
P40/CNTR0
P33
P32
P31/INT1
P30/INT0
RESET
VCC
Fig. 1 Pin configuration (top view)