Datasheet

Section 1 Overview
Rev.7.00 Feb. 14, 2007 page 5 of 1108
REJ09B0089-0700
Item Specification
Operating modes
• Four MCU operating modes (ROMless, mask ROM versions, H8S/2319 F-
ZTAT, and H8S/2319C F-ZTAT)
External Data Bus
Mode
CPU
Operating
Mode
Description
On-Chip
ROM
Initial
Value
Maximum
Value
1
*
1
— — — — —
2
*
2
3
*
2
4
*
3
Advanced On-chip ROM disabled
expansion mode
Disabled 16 bits 16 bits
5
*
3
On-chip ROM disabled
expansion mode
Disabled 8 bits 16 bits
6 On-chip ROM enabled
expansion mode
Enabled 8 bits 16 bits
7 Single-chip mode Enabled — —
Notes: 1. User boot mode in the H8S/2319C F-ZTAT. For user boot mode in
the H8S/2319C F-ZTAT, see table 17.52.
2. Boot mode in the H8S/2319 F-ZTAT and H8S/2319C F-ZTAT.
For boot mode in the H8S/2319 F-ZTAT, see table 17.30. Also
see table 17.30, for information on user program mode.
For boot mode in the H8S/2319C F-ZTAT, see table 17.52. Also
see table 17.52, for information on user program mode.
3. The ROMless version can use only modes 4 and 5.
Clock pulse
generator
• Built-in duty correction circuit