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M38861MCA-XXXGP View Datasheet(PDF) - MITSUBISHI ELECTRIC

Part NameM38861MCA-XXXGP Mitsubishi
MITSUBISHI ELECTRIC  Mitsubishi
DescriptionRAM size 2048bytes; single-chip 8-bit CMOS microcomputer
M38861MCA-XXXGP Datasheet PDF : 110 Pages
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MITSUBISHI MICROCOMPUTERS
3886 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
PIN DESCRIPTION
Table 1 Pin description (1)
Pin
Name
VCC, VSS Power source
CNVSS
CNVSS input
VREF
AVSS
RESET
XIN
Reference voltage
Analog power source
Reset input
Clock input
XOUT
Clock output
P00/P3REF
I/O port P0
P01–P07
P10–P17 I/O port P1
P20–P27 I/O port P2
P30/PWM00
P31/PWM10
I/O port P3
P32–P37
Functions
Function except a port function
•Apply voltage of 2.7 V – 5.5 V to Vcc, and 0 V to Vss.
•In the flash memory version, apply voltage of 4.0 V – 5.5 V to Vcc, and 0 V to Vss
•This pin controls the operation mode of the chip.
•Normally connected to VSS.
•If this pin is connected to Vcc, the internal ROM is inhibited and an external memory is accessed.
•In the flash memory version, connected to VSS.
•In the EPROM version or the flash memory version, this pin functions as the VPP power source input pin.
•Reference voltage input pin for A-D and D-A converters.
•Analog power source input pin for A-D and D-A converters.
•Connect 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.
•Comparator reference power source
•I/O direction register allows each pin to be individually input pin
programmed as either input or output.
•When the external memory is used, these pins are used as the address bus.
•CMOS compatible input level.
•CMOS 3-state output structure or N-channel open-drain output structure.
•8-bit CMOS I/O port.
•I/O direction register allows each pin to be individually programmed as either input or output.
•When the external memory is used, these pins are used as the address bus.
•CMOS compatible input level.
•CMOS 3-state output structure or N-channel open-drain output structure.
•8-bit CMOS I/O port.
•I/O direction register allows each pin to be individually programmed as either input or output.
•When the external memory is used, these pins are used as the data bus.
•CMOS compatible input level.
•CMOS 3-state output structure.
•P24 to P27 (4 bits) are enabled to output large current for LED drive (only in single-chip mode).
•8-bit CMOS I/O port.
•I/O direction register allows each pin to be individually
programmed as either input or output.
•When the external memory is used, these pins are
used as the control bus.
•Key-on wake-up input pin
•Comparator input pin
•PWM output pin
•CMOS compatible input level.
•Key-on wake-up input pin
•CMOS 3-state output structure.
•Comparator input pin
•These pins function as key-on wake-up and compara-
tor input.
•These pins are enabled to control pull-up.
5
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