Z8FS021 datasheet(20/68 Pages) ZILOG

20 / 68 page

PS028806-0315

Peripherals

ZMOTION® Intrusion Detection

Product Specification

Peripherals

The following sections describe the differences, changes or limitations placed on any of

the Z8FS021 peripherals or other functions from the base Z8F082A device. For more

information about the operation of each peripheral, please refer to the appropriate section

of the Z8 Encore! XP F082A Series Product Specification (PS0228).

Peripheral Availability

Table 3 shows how the Z8FS040 MCU peripherals are used by Zilog’s PIR technology

and how these peripherals differ from their counterparts on the base Z8F082A device. The

peripherals used by the PIR Engine should not be used by the application unless the

Engine is disabled through the PIR Engine Enable Register.

Table 3. Peripheral Availability

Device

Z8FS021xSB20EG

Z8FS021xHH20EG

Z8FS021xHJ20EG

Base MCU Device

Z8F082ASB020EG

Z8F082AHH020EG

Z8F082AHJ020EG

Pins/Package

8-pin SOIC

20-pin SSOP

28-pin SSOP

ADC

ANA1 is used for White

Light Detection when

enabled.

ANA2 is used for PIR

sensor input.

ANA3 is used for a

second sensor input in

Dual Pyro Mode.

ANA1 is used for White

Light Detection when

enabled.

ANA2 is used for PIR

sensor input.

ANA3 is connected to

ANA6/VREF.

ANA3 is used for a

second sensor input and

ANA6 becomes available

in Dual Pyro Mode.

ANA1 is used for White

Light Detection when

enabled.

ANA2 is used for PIR

sensor input.

ANA3 is connected to

VREF.

ANA3 is used for a

second sensor in Dual

Pyro Mode.

VREF

Internal VREF used by the

PIR Engine and set to 1V.

Internal VREF used by the

PIR Engine and set to 1V.

Internal VREF used by the

PIR Engine and set to 1V.

Timer 0

Available to application.

Timer 1

Available to application.

GP I/O

PA3/PA1 are multiplexed

with ANA2/ANA3 and

used for PIR sensor input

(ANA2 for single pyro

mode and ANA2/ANA3 for

dual pyro mode).

PB2, PB3 & PC2are used

for PIR functions.

In dual pyro mode, PC2

becomes available.

PB2, PB3 & PB5 are used

for PIR functions.

In dual pyro mode, PB5

becomes available.

Z8FS021 Datasheet(PDF) 20 Page - Zilog, Inc.

Z8FS021 Datasheet(HTML) 20 Page - Zilog, Inc.

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