Z86E04/E08
CMOS Z8 OTP Microcontrollers
Zilog
FUNCTIONAL DESCRIPTION (Continued)
Internal Address Counter. The address of Z86E04/E08
is generated internally with a counter clocked through pin
P01 (Clock). Each clock signal increases the address by
one and the “high” level of pin P00 (Clear) will reset the ad-
dress to zero. Figure 18 shows the setup time of the serial
address input.
Programming Waveform. Figures 19, 20 and 21 show
the programming waveforms of each mode. Table 8 shows
the timing of programming waveforms.
Programming Algorithm. Figure 22 shows the flow chart
of the Z86E04/E08 programming algorithm.
Table 8. Timing of Programming Waveforms
Parameters
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Name
Address Setup Time
Data Setup Time
VPP Setup
VCC Setup Time
Chip Enable Setup Time
Program Pulse Width
Data Hold Time
/OE Setup Time
Data Access Time
Data Output Float Time
Overprogram Pulse Width
EPM Setup Time
/PGM Setup Time
Address to /OE Setup Time
Option Program Pulse Width
/OE Width
Address Valid to /OE Low
Min
Max
Units
2
µs
2
µs
2
µs
2
µs
2
µs
0.95
ms
2
µs
2
µs
188
ns
100
ns
2.85
ms
2
µs
2
µs
2
µs
78
ms
250
ns
125
ns
34
PRELIMINARY
DS97Z8X0401