M37702M2AXXXFP View Datasheet(PDF) - Mitsumi

Part Name

Description

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M37702M2AXXXFP

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Mitsumi 

MITSUBISHI MICROCOMPUTERS

M37702M2AXXXFP, M37702M2BXXXFP

M37702S1AFP, M37702S1BFP

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

PIN DESCRIPTION

Pin

Name

VCC, VSS

Power supply

CNVSS

CNVSS input

______

RESET

Reset input

XIN

XOUT

_

E

Clock input

Clock output

Enable output

BYTE

Bus width selection

input

AVCC,

AVSS

VREF

P00 – P07

Analog supply input

Reference voltage

input

I/O port P0

P10 – P17

I/O port P1

P20 – P27

I/O port P2

P30 – P37

I/O port P3

P40 – P47

I/O port P4

P50 – P57

I/O port P5

P60 – P67

I/O port P6

P70 – P77

I/O port P7

P80 – P87

I/O port P8

Input/Output

Functions

Supply 5 V ± 10% to VCC and 0V to VSS.

Input

This pin controls the processor mode. Connect to VSS for single-chip mode, and

to VCC for external ROM types.

Input

To enter the reset state, this pin must be kept at a “L” condition which should be

maintained for the required time.

Input

Output

These are I/O pins of internal clock generating circuit. Connect a ceramic or quartz

crystal resonator between XIN and XOUT. When an external clock is used, the clock

source should be connected to the XIN pin and the XOUT pin should be left open.

Output

Data or instruction read and data write are performed when output from this pin

is “L”.

Input

In memory expansion mode or microprocessor mode, this pin determines

whether the external data bus is 8-bit width or 16-bit width. The width is 16 bits

when “L” signal inputs and 8 bits when “H” signal inputs.

Power supply for the A-D converter. Connect AVCC to VCC and AVSS to VSS

externally.

Input

This is reference voltage input pin for the A-D converter.

I/O

In single-chip mode, port P0 becomes an 8-bit I/O port. An I/O direction register

is available so that each pin can be programmed for input or output. These ports

are in input mode when reset.

Address (A7 – A0) is output in memory expansion mode or microprocessor mode.

I/O

In single-chip mode, these pins have the same functions as port P0. When the

BYTE pin is set to “L” in memory expansion mode or microprocessor mode and

extern_al data bus is 16-bit width, high-order data (D15 – D8) i_s input or output

when E output is “L” and an address (A15 – A8) is output when E output is “H”.

If the BYTE pin is “H” that is an external data bus is 8-bit width, only address

(A15 – A8) is output.

I/O

In single-chip mode, these pins have the same functions as port P0. In memory

expansion mo_de or microprocessor mode low-order data (D7 – D0) is _input or

output when E output is “L” and an address (A23 – A16) is output when E output

is “H”.

I/O

In single-chip mode, these pins have the same__fun_c_t_io_ns as port P_0_._I_n_memory

expansion mode or microprocessor mode, R/W, BHE, ALE and HLDA signals

are output.

I/O

In single-chip mode, these pins have the same functions as port_P__ 0_ . _In mem__o_r_y

expansion mode or microprocessor mode, P40 and P41 become HOLD and RDY

input pin respectively. Functions of other pins are the same as in single-chip

mode. In single-chip mode or memory expansion mode, port P42 can be pro-

grammed for φ1 output pin divided the clock to XIN pin by 2. In microprocessor

mode. P42 always has the function as φ1 output pin.

I/O

In addition to having the same functions as port P0 in single-chip mode, these

pins also function as I/O pins for timer A0, timer A1, timer A2 and timer A3.

I/O

In addition to having the same functions as port P0 in single-chi_p_m__od_e_,_t_hese

_p_in_s_also function as I/O pins for timer A4, external interrupt input INT0, INT1 and

INT2 pins, and input pins for timer B0, timer B1 and timer B2.

I/O

In addition to having the same functions as port P0 in single-chip mode, these

pins also function as analog input AN0 – AN7 input pins. P77 also has an A-D

conversion trigger input function.

I/O

In addition to having the same functio_n_s__as__p_o_rt P0 in single-chip mode, these

pins also function as RXD, TXD, CLK, CTS/RTS pins for UART 0 and UART 1.

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