Z86E0412PSC1860 ZILOG [Zilog, Inc.], Z86E0412PSC1860 Datasheet - Page 22

• Manufacturer Part Number: Z86E0412PSC1860
• Description: Z8 CMOS OTP Microcontrollers
• Manufacturer: ZILOG [Zilog, Inc.]

Figure 11. OPTION BIT PROGRAM AND VERIFY Mode Entry Functional Timing
PS009201-0301
CLOCK
CLEAR
(Port 2)
PGM
EPM
Data
X
V
OE
V
OUT
CE
CC
PP
V
V
V
V
V
V
V
V
V
V
V
V
V
V
5V
0V
IH
IH
IH
IH
IH
IH
IH
IL
IL
IL
IL
IL
IL
IL
6. After a delay of at least 1µs minimum from V
7. The CLOCK is raised to V
8. OE is pulsed Low to V
9. The CLOCK is lowered to V
10. Repeat steps 7 to 9 six more times.
11. After a delay of at least 1µs minimum, EPM is raised to V
12. The device is now in OPTION BIT READ/WRITE mode. See Figure 11.
Table 11. OPTION BIT PROGRAM AND VERIFY Mode Entry Conditions
EPROM Signal
D0–D3
D4–D7
GND
V
CC
Not connected
Not connected
18-Pin DIP/SOIC
Pins 15, 16, 17, 18
Pins 1, 2, 3, 4
Pin 14
Pin 5
P r o g r a m m i n g S p e c i f i c a t i o n
IL
, then High to V
IH
.
IL
.
20-Pin SSOP
Pins 17, 18, 19, 20
Pins 1, 2, 3, 4
Pins 15, 16
Pins 5, 6
IH
.
Z8 CMOS OTP Microcontrollers
PP
Z86E02/E04/E08/E09 SL1995
rising, OE is raised to V
IH
Forced State
NC
NC
GND
5V
.
IH
.
17