109
6.3
Programming
The program, verify, and other modes are selected as shown in table 6.2 in PROM mode.
Table 6.2
Mode Selection in PROM Mode
Pin
Mode
CE
OE
PGM
V
PP
V
CC
EO
7
to EO
0
EA
16
to EA
0
Write
L
H
L
V
PP
V
CC
Data input
Address input
Verify
L
L
H
V
PP
V
CC
Data output
Address input
Programming
L
L
L
V
PP
V
CC
High impedance
Address input
disabled
L
H
H
H
L
L
H
H
H
Legend:
L:
Low level
H:
High level
V
PP
:
V
PP
level
V
CC
:
V
CC
level
The programming and verifying specifications in PROM mode are the same as the specifications
of the standard HN27C101 EPROM. Page programming is not supported, however. The PROM
programmer must not be set to page mode. PROM programmers that support only page
programming cannot be used. When selecting a PROM programmer, make sure that it supports a
byte-by-byte high-speed, high-reliability programming method. Be sure to set the address range to
H'0000 to H'EDFF.