參數資料
型號: TMP320F28044GGMQ
廠商: Texas Instruments, Inc.
元件分類: 數字信號處理
英文描述: Digital Signal Processor
中文描述: 數字信號處理器
文件頁數: 39/107頁
文件大?。?/td> 784K
代理商: TMP320F28044GGMQ
www.ti.com
/512
OSCCLK
WDCR (WDPS(2:0))
WDCLK
WDCNTR(7:0)
WDKEY(7:0)
Good Key
1
0
1
WDCR (WDCHK(2:0))
Bad
WDCHK
Key
WDCR (WDDIS)
Clear Counter
SCSR (WDENINT)
Watchdog
Prescaler
Generate
Output Pulse
(512 OSCCLKs)
8-Bit
Watchdog
Counter
CLR
WDRST
WDINT
Watchdog
55 + AA
Key Detector
XRS
Core-reset
WDRST
(A)
Internal
Pullup
TMS320F28044
Digital Signal Processor
SPRS357B–AUGUST 2006–REVISED MAY 2007
A.
The WDRST signal is driven low for 512 OSCCLK cycles.
Figure 3-10. Watchdog Module
The WDINT signal enables the watchdog to be used as a wakeup from IDLE/STANDBY mode.
In STANDBY mode, all peripherals are turned off on the device. The only peripheral that remains
functional is the watchdog. The WATCHDOG module will run off OSCCLK. The WDINT signal is fed to the
LPM block so that it can wake the device from STANDBY (if enabled). See Section
Section 3.7
,
Low-Power Modes Block, for details.
In IDLE mode, the WDINT signal can generate an interrupt to the CPU, via the PIE, to take the CPU out of
IDLE mode.
In HALT mode, this feature cannot be used because the oscillator (and PLL) are turned off and hence so
is the WATCHDOG.
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Functional Overview
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