Z8PE003 Datasheet, PDF (17/48 Pages) Zilog, Inc. – FEATURE-ENHANCED Z8PLUS 1K ROM ONE-TIME PROGRAMMABLE (OTP) MICROCONTROLLER

ZiLOG
Z8PE003
Z8Plus OTP Microcontroller
Clock
First Machine Cycle
Internal
Reset
128 XTAL Clock Cycles
10 XTAL CLOCK CYCLES
Figure 9. Reset Timing
First Instruction Fetch
TCTLHI
D6,D5,D4
3
WDT Tap Select
XTAL
SMR
(PB0)
÷64
16-Bit Timer
WDTRST
Watch-Dog Timer
SMR Logic
64 SCLK
POR Delay
V_BO/POR
Figure 10. Reset Circuitry with POR, WDT, V_BO, and SMR
DS007500-Z8X0399
PRELIMINARY
17