HD64F38024HV Datasheet, PDF (171/684 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip Microcomputer H8 Family/H8/300L Super Low Power Series

Section 6 ROM
6.3 H8/38024 Programming
The write, verify, and other modes are selected as shown in table 6.2 in H8/38024 PROM mode.
Table 6.2 Mode Selection in PROM Mode (H8/38024)
Pins
Mode
CE
OE
PGM VPP
VCC
EO7 to EO0
EA16 to EA0
Write
L
H
L
VPP
VCC
Data input
Address input
Verify
L
L
H
VPP
VCC
Data output
Address input
Programming L
L
L
VPP
VCC
High impedance Address input
disabled
L
H
H
H
L
L
H
H
H
[Legend]
L: Low level
H: High level
VPP: VPP level
VCC: VCC level
The specifications for writing and reading are identical to those for the standard HN27C101
EPROM. However, page programming is not supported, and so page programming mode must not
be set. A PROM programmer that only supports page programming mode cannot be used. When
selecting a PROM programmer, ensure that it supports high-speed, high-reliability byte-by-byte
programming. Also, be sure to specify addresses from H'0000 to H'7FFF.
6.3.1 Writing and Verifying
An efficient, high-speed, high-reliability method is available for writing and verifying the PROM
data. This method achieves high speed without voltage stress on the device and without lowering
the reliability of written data. The basic flow of this high-speed, high-reliability programming
method is shown in figure 6.4.
Rev. 8.00 Mar. 09, 2010 Page 149 of 658
REJ09B0042-0800