Z86E09 Datasheet, PDF (32/38 Pages) Zilog, Inc. – Z8 CMOS OTP Microcontrollers

Z86E02/E04/E08/E09 SL1995
Z8 CMOS OTP Microcontrollers
27
Figure 17. EPROM ARRAY PROGRAM, VERIFY, and READ Algorithm
Start
Power-On Reset
V_CC= 5.0V
Send Unlock
Sequence and
Mode A Select
Clear Address
Counter to
First Location
N=0
Program
1 ms Pulse
Increment N
N = 25?
Yes
No
Fail
Verify
One Byte
Pass
Program One Pulse
3xN ms Duration
Fail
Verify Byte
Pass
Increment Address
No
Final Address?
Yes
Clear Address
Counter to
First Location
Increment Address
EPROM Read ^Fail
One Byte
Pass
No
Final Address?
Yes
Device Passed
Device Failed
PS009201-0301
Programming Specification