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參數資料
| 型號： | PCA2002T |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 時鐘及定時 |
| 英文描述： | 32 kHz watch circuit with programmable output period and pulse width |
| 中文描述： | STEPPING MOTOR WATCH, PDFP8 |
| 封裝： | PLASTIC, SOT-144-1, MFP-8 |
| 文件頁數： | 8/20頁 |
| 文件大?。?/td> | 124K |
| 代理商： | PCA2002T |
2004 Jan 20
8
Philips Semiconductors
Product specification
32 kHz watch circuit with programmable
output period and pulse width
PCA2002
handbook, full pagewidth
MGW356
VDD
VP(mod)
VDD(mod)
VSS
VP(start)
tp(start)
t0
t1t1t1
t3
t2
t3
t2
t3
t3
t4
tstore
Vstore
Vpre-store
tpre-store
Fig.8 Supply voltage modulation for programming.
C
HECKING THE MEMORY CONTENT
The stored data of the OTP array can be checked bit-wise by measuring the supply current. The array word is selected
by the instruction state, the bit is addressed by the shift register. To read a word, the word is first selected (t
d
= t
1
) and a
logic 1 is written into the first cell of the shift register (t
d
= t
3
).
This logic 1 is then shifted through the entire shift register (t
d
= t
2
, so that it points with each clock pulse to the next bit.
If the addressed OTP cell contains a logic 1, a 30 k
resistor is connected between V
DD
and V
SS
; this increases the
supply current accordingly.
V
DD
V
DD(mod)
V
P(mod)
(1)
V
SS
t
0
mgw357
I
DD
t
1
t
1
t
3
t
2
t
1
t
2
t
2
t
2
t
2
V
P(start)
t
p(start)
V
P(stop)
t
p(stop)
Fig.9 Supply voltage modulation for reading word B.
The corresponding supply current variation for B = 110101 (the sequence is MSB first and LSB last).
(1)
I
DD
V
30 k
=
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相關代理商/技術參數 |
參數描述 |
|---|---|
| PCA2002TK | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:32 kHz watch circuit with programmable output period and pulse width |
| PCA2002TK/1,118 | 功能描述:馬達/運動/點火控制器和驅動器 WATCH IC RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| PCA2002TK-T | 功能描述:馬達/運動/點火控制器和驅動器 WATCH IC RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| PCA2002U/10AA | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:32 kHz watch circuit with programmable output period and pulse width |
| PCA2002U/10AB/1 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:32 kHz watch circuit with programmable output period and pulse width |
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