Hitachi H8/500 Series User Manual

Figure 17-4 shows the basic high-speed programming flowchart.
Tables 17-5 and 17-6 list the electrical characteristics of the chip in the PROM mode. Figure 17-5
shows a write/verify timing chart.
SET program mode
Vcc = 6.0V ±0.25V, Vpp = 12.5V ±0.3V
Address = 0
n = 0
n + 1 1
→
Write time tpw = 1 ms ±5%
Verify OK?
N
N
Y
Y
SET verify mode
Vcc = 6.0V ±0.25V, Vpp = 12.5V ±0.3V
n < S
S = 25
Address + 1 Address
→
Last address?
N
Y
Write topw = 3n ms
SET program mode
Vcc = 6.0V ±0.25V, Vpp = 12.5V ±0.3V
SET read mode
Vcc = 5.0V ±0.5V, Vpp = Vcc
All address read?
END
NOGO
GO
Error
START
300
Figure 17-4 High-Speed Programming Flowchart
Downloaded from Elcodis.com electronic components distributor

Hitachi H8/500 Series Specifications

General

Brand	Hitachi
Model	H8/500 Series
Category	Computer Hardware
Language	English