Z8FS021 Datasheet, PDF (22/68 Pages) Zilog, Inc. – Select from an assortment of lenses and pyroelectric sensors to best fit your application

ZMOTION^® Intrusion Detection
Product Specification
14
ADC Channel
0
1
2
3
4
5
6
Available to Application
Yes
Yes – used for White Light detection
No
No
Yes
Yes
Only in Dual Pyro Mode
28-Pin Device. PB2 (ANA2) is reserved as the analog ADC input from the pyroelectric
sensor. Therefore, ANA2 is not available for user applications. Also, ANA3 is not avail-
able because it is tied directly to PB5/V_REF. PB5 will be configured as V_REF output by the
PIR Engine. In Dual Pyro Mode, ANA3 is used for a second sensor input rather than being
tied to V_REF; PB5 therefore becomes available. All other channels are available to the user
application.
ADC Channel
0
1
2
3
4
5
6
7
Available to Application
Yes
Yes – used for White Light detection
No
No
Yes
Yes
Yes
Yes
Timers
The Z8FS021 MCU offers two independent and identical 16-bit multi-function timers,
Timer 0 and Timer 1; both are available to the user application.
8-Pin Device
Timer 0
T0OUT is not available in Dual Pyro Mode; it is
configured as ANA3 to support a second sensor
input. All other external Timer 0 functions are
available for the user application.
PS028806-0315
Peripherals