Datasheet

Section 1 Overview
Rev. 4.00 Jun 06, 2006 page 19 of 1004
REJ09B0301-0400
Pin No.
Type Symbol
FP-80A
TFP-80C I/O Name and Function
Operating
mode
control
MD1
MD0
4
5
Input Mode pins: These pins set the operating mode.
The relation between the settings of pins MD1 and
MD0 and the operating mode is shown below.
These pins should not be changed while the MCU
is operating.
MD1 MD0
Operating
Mode Description
0 1 Mode 1 Normal
Expanded mode with
on-chip ROM disabled
1 0 Mode 2 Advanced
Expanded mode with
on-chip ROM enabled
or single-chip mode
1 1 Mode 3 Normal
Expanded mode with
on-chip ROM enabled
or single-chip mode
System
control
RES 1 Input Reset input: When this pin is driven low, the chip is
reset.
STBY 7 Input Standby: When this pin is driven low, a transition is
made to hardware standby mode.
Address
bus
A15 to
A0
48 to 55,
57 to 64
Output Address bus: These pins output an address.
Data bus D7 to
D0
72 to 65 Input/
output
Data bus (upper): Bidirectional data bus.
Used for 8-bit data.
Bus control WAIT 13 Input Wait: Requests insertion of a wait state in the bus
cycle when accessing external 3-state address
space.
RD 17 Output Read: When this pin is low, it indicates that the
external address space is being read.
WR 16 Output Write: When this pin is low, it indicates that the
external address space is being written to.
AS/IOS 15 Output Address strobe: When this pin is low, it indicates
that address output on the address bus is valid.