HD6435348R Hitachi Semiconductor, HD6435348R Datasheet - Page 146

• Manufacturer Part Number: HD6435348R
• Description: Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

7.1 Overview
To simplify interfacing to low-speed external devices, the H8/534 and H8/536 have an on-chip
wait-state controller (WSC) that can insert wait states (T
The wait-state function can be used in CPU and DTC access cycles to external addresses. It is not
used in access to on-chip supporting modules. The T
and T
state control register (WCR), or by holding the WAIT pin Low for the required interval.
7.1.1 Features
The main features of the wait-state controller are:
• Selection of three operating modes
• 0, 1, 2, or 3 wait states can be inserted.
Programmable wait mode, pin wait mode, or pin auto-wait mode
And in the pin wait mode, 4 or more states can be inserted by holding the WAIT pin Low.
3
state in the bus cycle. The number of wait states can be selected by a value set in the wait-
Section 7 Wait-State Controller
127
W
states are inserted between the T
W
) to prolong bus cycles.
2
state