Z8FS021 datasheet(22/68 Pages) ZILOG

22 / 68 page

PS028806-0315

Peripherals

ZMOTION® Intrusion Detection

Product Specification

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/VREF. PB5 will be configured as VREF output by the

PIR Engine. In Dual Pyro Mode, ANA3 is used for a second sensor input rather than being

tied to VREF; PB5 therefore becomes available. All other channels are available to the user

application.

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.

ADC Channel

Available to Application

0Yes

Yes – used for White Light detection

2No

3No

4Yes

5Yes

Only in Dual Pyro Mode

ADC Channel

Available to Application

0Yes

Yes – used for White Light detection

2No

3No

4Yes

5Yes

6Yes

7Yes

Timer 0

8-Pin Device

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.

Z8FS021 数据表(PDF) 22 Page - Zilog, Inc.

Z8FS021 数据表(HTML) 22 Page - Zilog, Inc.

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