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CMOS MICROCOMPUTER. M38507F8SP Datasheet |
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MITSUBISHI MICROCOMPUTERS
3850 Group (Spec. H)
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
DESCRIPTION
The 3850 group (spec. H) is the 8-bit microcomputer based on the
740 family core technology.
The 3850 group (spec. H) is designed for the household products
and office automation equipment and includes serial I/O functions,
8-bit timer, and A-D converter.
FEATURES
q Basic machine-language instructions ...................................... 71
q Minimum instruction execution time .................................. 0.5 µs
(at 8 MHz oscillation frequency)
q Memory size
ROM ................................................................... 8K to 32K bytes
RAM ................................................................. 512 to 1024 bytes
q Programmable input/output ports ............................................ 34
q Interrupts ................................................. 15 sources, 14 vectors
q Timers ............................................................................. 8-bit ✕ 4
q Serial I/O1 .................... 8-bit ✕ 1(UART or Clock-synchronized)
q Serial I/O2 ................................... 8-bit ✕ 1(Clock-synchronized)
q PWM ............................................................................... 8-bit ✕ 1
q A-D converter ............................................... 10-bit ✕ 5 channels
q Watchdog timer ............................................................ 16-bit ✕ 1
q Clock generating circuit ..................................... Built-in 2 circuits
(connect to external ceramic resonator or quartz-crystal oscillator)
qPower source voltage
In high-speed mode .................................................. 4.0 to 5.5 V
(at 8 MHz oscillation frequency)
In middle-speed mode ............................................... 2.7 to 5.5 V
(at 8 MHz oscillation frequency)
In low-speed mode .................................................... 2.7 to 5.5 V
(at 32 kHz oscillation frequency)
qPower dissipation
In high-speed mode ..........................................................34 mW
(at 8 MHz oscillation frequency, at 5 V power source voltage)
In low-speed mode ............................................................ 60 µW
(at 32 kHz oscillation frequency, at 3 V power source voltage)
qOperating temperature range ....................................–20 to 85°C
APPLICATION
Office automation equipment, FA equipment, Household products,
Consumer electronics, etc.
PIN CONFIGURATION (TOP VIEW)
VCC
VREF
AVSS
P44/INT3/PWM
P43/INT2/SCMP2
P42/INT1
P41/INT0
P40/CNTR1
P27/CNTR0/SRDY1
P26/SCLK
P25/TxD
P24/RxD
P23
P22
VPP CNVSS
P21/XCIN
P20/XCOUT
RESET
XIN
XOUT
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
42 P30/AN0
41 P31/AN1
40 P32/AN2
39 P33/AN3
38 P34/AN4
37 P00/SIN2
36 P01/SOUT2
35 P02/SCLK2
34 P03/SRDY2
33 P04
32 P05
31 P06
30 P07
29 P10/(LED0)
28 P11/(LED1)
27 P12/(LED2)
26 P13/(LED3)
25 P14/(LED4)
24 P15/(LED5)
23 P16/(LED6)
22 P17/(LED7)
: Flash memory version
Package type : FP ........................... 42P2R-A/E (42-pin plastic-molded SSOP)
Package type : SP ........................... 42P4B (42-pin plastic-molded SDIP)
Fig. 1 M38503MXH-XXXFP/SP pin configuration
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FUNCTIONAL BLOCK
MITSUBISHI MICROCOMPUTERS
3850 Group (Spec. H)
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Fig. 2 Functional block diagram
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MITSUBISHI MICROCOMPUTERS
3850 Group (Spec. H)
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
PIN DESCRIPTION
Table 1 Pin description
Pin
VCC, VSS
CNVSS
RESET
XIN
Name
Power source
CNVSS input
Reset input
Clock input
XOUT
Clock output
P00/SIN2
P01/SOUT2
P02/SCLK2
P03/SRDY2
P04–P07
P10–P17
P20/XCOUT
P21/XCIN
P22
P23
P24/RxD
P25/TxD
P26/SCLK
P27/CNTR0/
SRDY1
I/O port P0
I/O port P1
I/O port P2
P30/AN0–
P34/AN4
P40/CNTR1
P41/INT0
P42/INT1
P43/INT2/SCMP2
I/O port P3
I/O port P4
P44/INT3/PWM
Functions
Function except a port function
•Apply voltage of 2.7 V – 5.5 V to Vcc, and 0 V to Vss.
•This pin controls the operation mode of the chip.
•Normally connected to VSS.
•Reset input pin for active “L.”
•Input and output pins for the clock generating circuit.
•Connect a ceramic resonator or quartz-crystal oscillator between the XIN and XOUT pins to set
the oscillation frequency.
•When an external clock is used, connect the clock source to the XIN pin and leave the XOUT
pin open.
•8-bit CMOS I/O port.
•I/O direction register allows each pin to be individually
programmed as either input or output.
•CMOS compatible input level.
• Serial I/O2 function pin
•CMOS 3-state output structure.
•P10 to P17 (8 bits) are enabled to output large current for LED drive.
•8-bit CMOS I/O port.
•I/O direction register allows each pin to be individually
programmed as either input or output.
•CMOS compatible input level.
•P20, P21, P24 to P27: CMOS3-state output structure.
•P22, P23: N-channel open-drain structure.
• Sub-clock generating circuit I/O
pins (connect a resonator)
• Serial I/O1 function pin
•8-bit CMOS I/O port with the same function as port P0.
•CMOS compatible input level.
•CMOS 3-state output structure.
•8-bit CMOS I/O port with the same function as port P0.
•CMOS compatible input level.
•CMOS 3-state output structure.
• Serial I/O1 function pin/
Timer X function pin
• A-D converter input pin
• Timer Y function pin
• Interrupt input pins
• Interrupt input pin
• SCMP2 output pin
• Interrupt input pin
• PWM output pin
3
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