SH7018 Datasheet, PDF (24/431 Pages) Renesas Technology Corp – SuperH™ RISC engine

Table 1.2 Pin Functions (cont)
Type
Address bus
Data bus
Bus control
Abbreviation I/O
A0 to A21
Output
D0 to D7
CS0 to CS3
Input/
output
Output
RD
WRL
Output
Output
WAIT
Input
Multifunction timer TIOC0A
pulse unit (MTU) TIOC0C
Input/
output
TIOC1A
TIOC1B
Input/
output
TIOC2A
TIOC2B
Input/
output
Serial
communication
interface (SCI)
TxD
RxD
SCK
Output
Input
Input/
output
Name
Function
Address bus
These pins are used for address
output.
Data bus
This is an 8-bit bi-directional
data bus.
Chip select 0 to 3 These pins are used for chip
select signals for external
memory or devices.
Read
Indicates that data is being read
from an external device.
Write
Indicates that the lower eight
external data bits (bits 7 to 0)
are being written to.
Wait
This input is used to insert a wait
cycle when accessing the
external area.
MTU input
capture/output
compare
(channel 0)
Channel 0 input capture
input/output compare
output/PWM output pin.
MTU input
capture/output
compare
(channel 1)
Channel 1 input capture
input/output compare
output/PWM output pin.
MTU input
capture/output
compare
(channel 2)
Channel 2 input capture
input/output compare
output/PWM output pin.
Transmit data
Transmit data output pin.
Receive data
Serial clock
Receive data input pin.
Clock input/output pin.
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