Z86E09 Datasheet, PDF (14/38 Pages) Zilog, Inc. – Z8 CMOS OTP Microcontrollers

Z86E02/E04/E08/E09 SL1995
Z8 CMOS OTP Microcontrollers
9
EPROM Modes
The device offers two modes of operation. Table 6 lists the available mode
options.
Table 6. Mode Selections
Value Description
A
EPROM Array Read and Write modes
B
Option Bit Program and Verify modes
Top Level Operations
Figure 7 illustrates the operations available to the user after the device is
unlocked and enters EPROM mode.
Figure 7. Top Level Operations Flow
Start
Power-On Reset
to 5.0V
Unlock Sequence
into EPROM Mode
EPROM ARRAY
READ/WRITE
Mode
EPROM Mode Selection
OPTION BIT
PROGRAM/VERIFY
Mode
Exit
Execute Power
Down Sequence
Program/Verify/
Overprogram
Operation
READ
Operation
Program/Verify/
Overprogram
Operation
READ
Operation
End
PS009201-0301
Programming Specification