HD6432621 Hitachi, HD6432621 Datasheet - Page 64

• Manufacturer Part Number: HD6432621
• Description: (HD64F262x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

Type
Data bus
Bus control
16-bit timer-
pulse unit
(TPU)
20
Symbol
D15 to D0
AS
RD
HWR
LWR
WAIT
TCLKD to
TCLKA
TIOCA0,
TIOCB0,
TIOCC0,
TIOCD0
TIOCA1,
TIOCB1
TIOCA2,
TIOCB2
TIOCA3,
TIOCB3,
TIOCC3,
TIOCD3
TIOCA4,
TIOCB4
TIOCA5,
TIOCB5
I/O
Input/
output
Output
Output
Output
Output
Input
Input
Input/
output
Input/
output
Input/
output
Input/
output
Input/
output
Input/
output
Pin Name
Data bus
Address strobe
Read
High write
Low write
Wait
Clock input
D to A
Input capture/
output compare
match A0 to D0
Input capture/
output compare
match A1 and B1
Input capture/
output compare
match A2 and B2
Input capture/
output compare
match A3 to D3
Input capture/
output compare
match A4 and B4
Input capture/
output compare
match A5 and B5
Function
Bidirectional data bus
Goes low to indicate valid address
output on the address bus.
Goes low to indicate reading from the
external address space.
Strobe signal indicating writing to the
external address space; indicates valid
data on the upper data bus (D15 to D8).
Strobe signal indicating writing to the
external address space; indicates valid
data on the lower data bus (D7 to D0).
Requests insertion of wait states in bus
cycles during access to 3-state external
address space.
These pins input an external clock.
The TGR0A to TGR0D input capture
input/output compare output/PWM
output pins
The TGR1A and TGR1B input capture
input/output compare output/PWM
output pins
The TGR2A and TGR2B input capture
input/output compare output/PWM
output pins
The TGR3A to TGR3D input capture
input/output compare output/PWM
output pins
The TGR4A and TGR4B input capture
input/output compare output/PWM
output pins
The TGR5A and TGR5B input capture
input/output compare output/PWM
output pins