h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 191
h8s-2138
Manufacturer Part Number
h8s-2138
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2138.pdf
(1061 pages)
- Current page: 191 of 1061
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6.1
The H8S/2138 Group and H8S/2134 Group have an on-chip bus controller (BSC) that allows
external address space bus specifications, such as bus width and number of access states, to be set.
The bus controller also has a bus arbitration function, and controls the operation of the internal bus
masters: the CPU and data transfer controller (DTC).
6.1.1
The features of the bus controller are listed below.
Basic bus interface
Burst ROM interface
Idle cycle insertion
Bus arbitration function
2-state access or 3-state access can be selected
Program wait states can be inserted
External space can be designated as ROM interface space
1-state or 2-state burst access can be selected
An idle cycle can be inserted when an external write cycle immediately follows an external
read cycle
Includes a bus arbiter that arbitrates bus mastership between the CPU and DTC
Features
Overview
Section 6 Bus Controller
Rev. 4.00 Jun 06, 2006 page 137 of 1004
Section 6 Bus Controller
REJ09B0301-0400
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