h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 677
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)
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22.1
H8S/2138 F-ZTAT A-mask version and H8S/2134 F-ZTAT A-mask version have 128 kbytes of
on-chip flash memory. The flash memory is connected to the bus master by a 16-bit data bus. The
bus master accesses both byte and word data in one state, enabling faster instruction fetches and
higher processing speed.
The mode pins (MD1 and MD0) and the EXPE bit in MDCR can be set to enable or disable the
on-chip ROM.
The flash memory version of this group can be erased and programmed on-board as well as with a
general-purpose PROM programmer.
22.1.1
Figure 22.1 shows a block diagram of the ROM.
Overview
Block Diagram
Section 22 ROM
(H8S/2138 F-ZTAT A-Mask Version,
H8S/2134 F-ZTAT A-Mask Version)
Figure 22.1 ROM Block Diagram
H'01FFFE
H'000000
H'000002
(H8S/2138 F-ZTAT A-Mask Version, H8S/2134 F-ZTAT A-Mask Version)
Internal data bus (upper 8 bits)
Internal data bus (lower 8 bits)
Section 22 ROM
H'01FFFF
H'000001
H'000003
Rev. 4.00 Jun 06, 2006 page 623 of 1004
REJ09B0301-0400
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