M306V2ME Datasheet, PDF (7/276 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

MITSUBISHI MICROCOMPUTERS
M306V2ME-XXXFP
M306V2EEFP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
Table 1.5.3 Pin description (1)
Pin name
VCC, VSS
Signal name
Power supply
input
I/O type
CNVSS
CNVSS
Input
RESET
Reset input Input
Function
Supply 4.5 V to 5.5 V to the VCC pin. Supply 0 V to the VSS pin.
This pin switches between processor modes. Connect it to the
VSS pin when operating in single-chip or memory expansion mode.
Connect it to the VCC pin when in microprocessor mode.
A “L” on this input resets the microcomputer.
XIN
XOUT
BYTE
AVCC
P00 to P07
D0 to D7
P10 to P17
D8 to D15
Clock input
Clock output
Input
Output
These pins are provided for the main clock generating circuit.Connect
a ceramic resonator or crystal between the XIN and the XOUT pins. To
use an externally derived clock, input it to the XIN pin and leave the
XOUT pin open.
External data Input
bus width
select input
This pin selects the width of an external data bus. A 16-bit width is
selected when this input is “L”; an 8-bit width is selected when this
input is “H”. This input must be fixed to either “H” or “L.” When
operating in single-chip mode,connect this pin to VSS.
Analog power
supply input
I/O port P0
Input/output
Input/output
This pin is a power supply input for the A-D converter. Connect this
pin to VCC.
This is an 8-bit CMOS I/O port. It has an input/output port direction
register that allows the user to set each pin for input or output
individually. When set for input in single-chip mode, the user can specify
in units of four bits via software whether or not they are tied to a pull-up
resistor. In memory expansion and microprocessor modes, the user
cannot specify that.
When set as a separate bus, these pins input and output data (D0–D7).
I/O port P1 Input/output This is an 8-bit I/O port equivalent to P0.
Input/output When set as a separate bus, these pins input and output data (D8–D15).
P20 to P27
A0 to A7
A0/D0 to
A7/D7
I/O port P2
A0
A1/D0 to A7/D6
P30 to P37
A8 to A15
A8/D7,
A9 to A15
I/O port P3
P40 to P47 I/O port P4
CS0 to CS3,
A16 to A19
Input/output This is an 8-bit I/O port equivalent to P0.
Output
These pins output 8 low-order address bits (A0–A7).
Input/output If the external bus is set as an 8-bit wide multiplexed bus, these pins
input and output data (D0–D7) and output 8 low-order address bits
(A0–A7) separated in time by multiplexing.
Output
If the external bus is set as a 16-bit wide multiplexed bus, these pins
Input/output input and output data (D0–D6) and output address (A1–A7) separated
in time by multiplexing. They also output address (A0).
Input/output This is an 8-bit I/O port equivalent to P0.
Output
These pins output 8 middle-order address bits (A8–A15).
Input/output If the external bus is set as a 16-bit wide multiplexed bus, these pins
Output
input and output data (D7) and output address (A8) separated in time
by multiplexing. They also output address (A9–A15).
Input/output This is an 8-bit I/O port equivalent to P0.
Output
Output
These pins output CS0–CS3 signals and A16–A19. CS0–CS3 are chip
select signals used to specify an access space. A16–A19 are 4 high-
order address bits.
Rev. 1.0
7