Write/Verify And Electrical Characteristics - Hitachi SH7032 Hardware Manual

Table 17.2 Selecting PROM Programming Mode
CE
Mode
Write 0
Verify 0
Program inhibit 0
0
1
1
Legend:
0: Low
1: High
V : V level
PP PP
V : V level
CC CC
17.3.2

Write/Verify and Electrical Characteristics

Write/Verify: Write/verify can be accomplished by an efficient high-speed, high-reliability
programming method. This method can write data quickly and accurately without placing voltage
stress on the device. The basic flowchart for this high-speed, high-reliability programming method
is shown in figure 17.4.
Pin
OE PGM
V
PP
1 0 V
PP
0 1
0 0
1 1
0 0
1 1
V I/O7–I/O0
CC
V Data input
CC
Data output
High impedance
A16–A0
Address input
451