z8f0813 ZiLOG Semiconductor, z8f0813 Datasheet - Page 98
z8f0813
Manufacturer Part Number
z8f0813
Description
High-performance 8-bit Microcontrollers
Manufacturer
ZiLOG Semiconductor
Datasheet
1.Z8F0813.pdf
(247 pages)
- Current page: 98 of 247
- Download datasheet (4Mb)
PS024314-0308
Watchdog Timer Refresh
Watchdog Timer Time-Out Response
When first enabled, the WDT is loaded with the value in the Watchdog Timer Reload
registers. The Watchdog Timer counts down to
executed by the eZ8 CPU. Execution of the
reloaded with the WDT Reload value stored in the Watchdog Timer Reload registers.
Counting resumes following the reload operation.
When Z8 Encore! XP
OCD), the Watchdog Timer is continuously refreshed to prevent any Watchdog Timer
time-outs.
The Watchdog Timer times out when the counter reaches
Watchdog Timer generates either an interrupt or a system reset. The WDT_RES Flash
Option Bit determines the time-out response of the Watchdog Timer. For information on
programming of the WDT_RES Flash Option Bit, see
WDT Interrupt in Normal Operation
If configured to generate an interrupt when a time-out occurs, the Watchdog Timer issues
an interrupt request to the interrupt controller and sets the WDT status bit in the Watchdog
Timer Control register. If interrupts are enabled, the eZ8 CPU responds to the interrupt
request by fetching the Watchdog Timer interrupt vector and executing code from the
vector address. After time-out and interrupt generation, the Watchdog Timer counter rolls
over to its maximum value of
counter is not automatically returned to its Reload Value.
The Reset Status Register (see
clearing the WDT interrupt. This read clears the WDT time-out Flag and prevents further
WDT interrupts for immediately occurring.
WDT Interrupt in STOP Mode
If configured to generate an interrupt when a time-out occurs and Z8 Encore! XP F0823
Series are in STOP mode, the Watchdog Timer automatically initiates a Stop Mode Recov-
ery and generates an interrupt request. Both the WDT status bit and the STOP bit in the
Watchdog Timer Control register are set to 1 following a WDT time-out in STOP mode.
For more information on Stop Mode Recovery, see
page 21.
If interrupts are enabled, following completion of the Stop Mode Recovery the eZ8 CPU
responds to the interrupt request by fetching the Watchdog Timer interrupt vector and
executing code from the vector address.
®
F0823 Series devices are operating in DEBUG Mode (using the
FFFFFH
Reset Status Register
and continues counting. The Watchdog Timer
WDT
000000H
instruction causes the down counter to be
Reset and Stop Mode Recovery
on page 28) must be read before
Flash Option Bits
Z8 Encore! XP
unless a
000000H
Product Specification
WDT
. A time-out of the
instruction is
®
on page 141.
F0823 Series
Watchdog Timer
on
88
Related parts for z8f0813
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Z8 Encore!? Microcontroller With Flash Memory And 10-bit A/d Converter
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Z8 Encore! Xp F64xx Series
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Z8 Encore Motor Control Flash Mcus
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Z8 Encore XP-R F08xA Series with eXtended Peripherals
Manufacturer:
ZILOG [Zilog, Inc.]
Datasheet:
Part Number:
Description:
Z8 Encore Microcontrollers with Flash Memory and 10-Bit A/D Converter
Manufacturer:
ZILOG [Zilog, Inc.]
Datasheet:
Part Number:
Description:
Z8 Encore-R Motor Control Flash MCUs
Manufacturer:
ZILOG [Zilog, Inc.]
Datasheet:
Part Number:
Description:
Z8 Encore-R Motor Control Series
Manufacturer:
ZILOG [Zilog, Inc.]
Datasheet:
Part Number:
Description:
Z8 MCU MICROCONTROLLERS
Manufacturer:
ZILOG [Zilog, Inc.]
Datasheet:
Part Number:
Description:
Z8 Encore / Microcontrollers with Flash Memory and 10 Bit A/D Converter
Manufacturer:
Zilog
Datasheet:
Part Number:
Description:
Z8 MCU MICROCONTROLLERS
Manufacturer:
Zilog.
Datasheet:
Part Number:
Description:
Ez80f91 Mini Enet Module
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Z90233, Z90234, And Z90231 Ezvision 200 Television Controller
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Digital Television Controllers
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Television Controllers
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
40-pin Low-cost Digital Television Controller
Manufacturer:
ZiLOG Semiconductor
Datasheet: