參數(shù)資料
型號(hào)： L4969
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)： 21/35頁(yè)
文件大小： 337K
代理商： L4969
21/35
L4969
2.3
ADR 2: GPTR Global Parameter and Test Register
Figure 13.
2.4
ADR 3: RCADJ RC-Oscillator Adjust register
Figure 14.
During normal operation the
μ
C can set CG1 and CG0 to ‘01’ to force a 200Hz rectangular waveform on NINT
with 50% duty cycle. Note, that all other pending interrupts have to be cleared before.
After the XTAL driven timer of the
μ
C calculated the relative cycle time and the corresponding deviation,
CG1 and CG0 have to be set to ‘10’ to disable the adjustment cycle on NINT. From the deviation calculated by
the
μ
C, the correction factor of the RC-oscillator -15% to + 16% can be reprogrammed with CG1 and CG0 set
to ‘00’ or ‘11’. (‘11’ can be used to indicate that calibration has already been performed).
Note, that overwriting this register is only valid, if the cycle measurement was started and terminated properly.
This can be tested by evaluating PGEN either prior to or during correction (Read back via SOUT).
Note also, that any write to the WDC register will reset the timer and thus reset the phase of the testcycle. There-
fore a cyclic access to the window watchdog during the pulsewidth measurement has to be avoided and the
timer watchdog to be used instead (i.e. 1sec)
RES
RES
RES
RES
D7
D0
TM1
TM0
TMUX
TEN
This register is to be used for testpurpose only, all bits have to remain ‘zero’
CG1
CG0
PGEN
ADJ4
ADJ3
ADJ2
ADJ1
ADJ0
D7
D0
00: No request (Adjustment disabled)
01: 2.5ms low cycle on NINT (repetitive)
10: Finish cycle measurement
11: No request (Adjustment disabled)
Test cycle request
A low pulse on NINT
for a fixed period
of time can be requested
for XTAL synchronization
99AT0022
Program enable (read only)
Bit will be set after 'Finish cycle measurement',
and reset after register write
1: +16%
0: 0%
0: 0%
1: -8%
0: 0%
1: -4%
0: 0%
1: -2%
0: 0%
1: -1%
RC Oscillator
Frequency Adjust
default value 10000
Note, that programming
is only enabled with PGEN set
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L4969D013TR 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) Triple w/Lo-Spd Tran RoHS:否 制造商:STMicroelectronics 輸出類型: 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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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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