Z8FS021 Datasheet, PDF (20/68 Pages) Zilog, Inc. – Select from an assortment of lenses and pyroelectric sensors to best fit your application

ZMOTION^® Intrusion Detection
Product Specification
12
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.
Base MCU Device
Pins/Package
ADC
V_REF
Timer 0
Timer 1
GP I/O
Table 3. Peripheral Availability
Z8FS021xSB20EG
Device
Z8FS021xHH20EG
Z8FS021xHJ20EG
Z8F082ASB020EG
Z8F082AHH020EG
Z8F082AHJ020EG
8-pin SOIC
20-pin SSOP
28-pin SSOP
ANA1 is used for White
Light Detection when
enabled.
ANA1 is used for White
Light Detection when
enabled.
ANA1 is used for White
Light Detection when
enabled.
ANA2 is used for PIR
sensor input.
ANA2 is used for PIR
sensor input.
ANA2 is used for PIR
sensor input.
ANA3 is used for a
second sensor input in
Dual Pyro Mode.
ANA3 is connected to
ANA6/V_REF.
ANA3 is used for a
second sensor input and
ANA6 becomes available
in Dual Pyro Mode.
ANA3 is connected to
V_REF.
ANA3 is used for a
second sensor in Dual
Pyro Mode.
Internal V_REF used by the Internal V_REF used by the Internal V_REF used by the
PIR Engine and set to 1V. PIR Engine and set to 1V. PIR Engine and set to 1V.
Available to application. Available to application. Available to application.
Available to application. Available to application. Available to application.
PA3/PA1 are multiplexed PB2, PB3 & PC2are used PB2, PB3 & PB5 are used
with ANA2/ANA3 and
for PIR functions.
for PIR functions.
used for PIR sensor input _{In dual pyro mode, PC2}
(ANA2 for single pyro
becomes available.
mode and ANA2/ANA3 for
In dual pyro mode, PB5
becomes available.
dual pyro mode).
PS028806-0315
Peripherals