参数资料
型号: L99PM62XPTR
厂商: STMICROELECTRONICS
元件分类: 电源管理
英文描述: 4-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO36
封装: ROHS COMPLIANT, POWERSSO-36
文件页数: 15/98页
文件大小: 1117K
代理商: L99PM62XPTR
Description
L99PM62XP
Doc ID 16363 Rev 2
Figure 10. Watchdog with error conditions
Figure 11. Watchdog in Flash mode
2.4.1
Change watchdog timing
There are 4 programmable watchdog timings available, which represent the nominal trigger
time in window mode. To change the watchdog timing, a new timing has to be written by SPI.
The new timing gets active with the next valid watchdog trigger. The following figures
illustrate the sequence, which is recommended to use, changing the timing within long open
window and within window mode.
WD
OFF
long
open
window
Window
Mode
propper trigger in
Window mode
TRIG = 1'
WD fail
TSD2
WD fail
TSD2
forced VBAT *)
V1 < Vrth
V1 > Vrth
VBAT Standby
V1 Standby (I(V1) < ICMP)
*) forced VBAT: 15x WD fail
7x TSD2
Short V1
Active mode
WD
OFF
long
open
window
Window
Mode
FLASH mode
Exit FLASH mode
FLASH mode
Active mode
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