參數(shù)資料
型號(hào)： L4969MD
廠商： 意法半導(dǎo)體
英文描述： SYSTEM VOLTAGE REGULATOR WITH FAULT TOLERANT LOW SPEED CAN-TRANSCEIVER
中文描述： 系統(tǒng)電壓調(diào)節(jié)器容錯(cuò)低速的CAN收發(fā)器
文件頁(yè)數(shù)： 22/35頁(yè)
文件大小： 337K
代理商： L4969MD
L4969
22/35
Figure 15.
2.5
ADR4: WDC Watchdog Control Register
Figure 16.
The Startup Watchdog is not programmable and will always generate a 1.0ms low cycle on NRESET followed
by a 320ms high cycle until an Acknowledgment will occur. If no Acknowldege is received after the 7th cycle,
the device will automatically be forced into Sleep mode.
Acknowledgment and Reset of Startup and Window Watchdog is automatically performed by overwriting
(or rewriting) this register.
Note, that with WDEN set, a cyclic setting of IFR.WKW after the programmed Wakeup time will occur.
2.5.1 Watchdog configuration:
“No Request”
“2.5ms cycle
on NINT”
“Finish Cycle”
“Update ADJ”
CG=01
CG=10
CG=00
CG=11
State transition during oscillator calibration
Watchdog and Interrupt
has to be disabled
Start time measurement
at rising edge
Calculate
Offset
Write offset
Watchdog and Interrupt can be enabled
SWT0
WDT3
SWT1
WND
WDEN
WDT2
WDT1
WDT0
D7
D0
Wakeup Watchdog
timing configuration
0000 : 80ms
0001 : 160ms
0010 : 320ms
0011 : 640ms
0100 : 800ms
1000 : 1sec
1001 : 2sec
1010 : 4sec
1011 : 8sec
1100 : 45min
Software Window Watchdog
timing configuration
00 : 2.5 - 5ms
01 : 5 - 10ms
10 : 10 - 20ms
11 : 20 - 40ms
Enable Wakeup Watchdog,
Window Watchdog will be
automatically deactivated
until wakeup watchdog expires
Reserved bits (‘RES’) have to be written as ‘0’.
Disable
Window Watchdog,
only allowed with
PGEN set, see
previous table
for Osc adjust
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L4969UR 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) BODY SMARTPOWER RoHS:否 制造商:STMicroelectronics 輸出類(lèi)型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L
L4969URD 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) BODY SMARTPOWER RoHS:否 制造商:STMicroelectronics 輸出類(lèi)型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L
L4969URD-E 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) BODY SMARTPOWER RoHS:否 制造商:STMicroelectronics 輸出類(lèi)型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L
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