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參數(shù)資料
| 型號： | CAT521JI-TE13 |
| 英文描述： | 1-Mbit (64K x 16) Static RAM |
| 中文描述： | 數(shù)字電位器|?？苵 14PIN |塑料 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大小： | 85K |
| 代理商： | CAT521JI-TE13 |
CAT525
7
Doc. No. 2001, Rev. A
Figure 3. Temporary Change in Output
same as that which had been there previously no change
in the DPP’s output is noticed. Had the value held in the
control register been different from that stored in non-
volatile memory then
a change would
occur
at the read
cycle’s conclusion.
TEMPORARILY CHANGE OUTPUT
The CAT525 allows temporary changes in DPP’s output
to be made without disturbing the settings retained in
non-volatile memory. This feature is particularly useful
when testing for a new output setting and allows for user
adjustment of preset or default values without losing the
original factory settings.
Figure 3 shows the control and data signals needed to
effect a temporary output change. DPP settings may be
changed as many times as required and can be made to
any of the four DPPs in any order or sequence. The
temporary setting(s) remain in effect long as CS remains
high. When CS returns low all four DPPs will return to the
output values stored in non-volatile memory.
When it is desired to save a new setting acquired using
this feature, the new value must be reloaded into the
DPP control register prior to programming. This is
because the CAT525’s internal control circuitry discards
from the programming register the new data two clock
cycles after receiving it if no PROG signal is received.
Amplified DPP Output
A
APPLICATION CIRCUITS
+5V
Bipolar DPP Output
CAT525
GND
VDD
REFH
REFL
CONTROL
& DATA
+
–
OP 07
OUT
RF
I
RI
-15V
+15V
R
R
I
F
I
RF
VDPP
For RI
OUT
RF
I
DPP
Vi
VOUT
VDPP
CAT525
GND
VDD
REFH
REFL
CONTROL
& DATA
+
–
OP 07
VOUT
-15V
+15V
+5V
R
R
I
F
OUT RF
–––
) V
RI
MSB LSB
1111 1111
255
(.98 REF
1000 0000
128
(.98 REF
0111 1111
255
(.98 REF
0000 0001
255
(.98 REF
0000 0000
0
(.98 REF
REF
F
VREF
RI
OUT
DPP INPUT DPP OUTPUT ANALOG
OUTPUT
REF
OUT
REF
OUT
REF
OUT
REF
OUT
VFS
ZERO
REF
VDPP
CODE
(VFS
ZERO
ZERO
REF
REF
REF
REF
REF
REF
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
D0
D1
D2
D3
D4
D5
D6
D7
1
NEW DPP DATA
CURRENT DPP DATA
DO
DI
CS
PROG
OUDPP
to
CURRENT
NON-VOLATILE
DPNEW
VOLATILE
CURRENT
NON-VOLATILE
RDY/BSY
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CAT521J-TE13 | 1-Mbit (64K x 16) Static RAM |
| CAT521P | 1-Mbit (64K x 16) Static RAM |
| CAT521PI | 1-Mbit (64K x 16) Static RAM |
| CAT523JI-TE13 | 1-Mbit (64K x 16) Static RAM |
| CAT523J-TE13 | 1-Mbit (64K x 16) Static RAM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT521L | 功能描述:數(shù)字電位計 IC Com Temp 28K 3-Wire RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| CAT521LI | 功能描述:數(shù)字電位計 IC Ind Temp 28K 3-Wire RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| CAT521P | 功能描述:數(shù)字電位計 IC Com Temp 28K 3-Wire RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| CAT521PI | 功能描述:數(shù)字電位計 IC Ind Temp 28K 3-Wire RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| CAT521W | 功能描述:數(shù)字電位計 IC Com Temp 28K 3-Wire RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
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