參數(shù)資料
型號(hào)： x9440
元件分類(lèi)： 數(shù)字電位計(jì)
英文描述： Dual Digitally-Controlled (EEPOT) Potentiometer & Voltage Comparator(雙數(shù)控電位器和電壓比較器)
中文描述： 雙數(shù)字控制（EEPOT）電位
文件頁(yè)數(shù)： 8/22頁(yè)
文件大小： 146K
代理商： X9440
X9440
Characteristics subject to change without notice.
8 of 22
REV 1.0 2/27/01
www.xicor.com
Figure 9. Memory Map
WCRO
R0
R1
R2
R3
WCR1
R0
R1
R2
R3
ACR0
R0
R1
R2
R3
ACR1
R0
R1
R2
R3
Figure 10. Instruction Set
Read Wiper Counter Register (WCR) or Analog Control Register (ACR)
Read the contents of the Wiper Counter Register or Analog Control Register pointed to by P
1
-P
0
.
P1 P0: 00-WCR0, 01 - WCR1
P1 P0: 10-ACR0, 11 - ACR1
Write Wiper Counter Register (WCR) or Analog Control Register (ACR)
Write new value to the Wiper Counter Register or Analog Control Register pointed to by P
1
-P
0
.
device type
identifier
addresses
opcode
A
1
0
P1 P0: 00-WCR0, 01 - WCR1
P1 P0: 10-ACR0, 11 - ACR1
Read Data Register (DR)
Read the contents of the Register pointed to by P
1
-P
0
and R
1
-R
0
.
device type
identifier
addresses
A
1
0
R1 R0: 00-R0, 10-R1
01-R2, 11-R3
Write Data Register (DR)
Write new value to the Register pointed to by P
1
-P
0
and R
1
-R
0
.
device type
identifier
addresses
A
1
CS
Falling
Edge
device type
identifier
device
addresses
instruction
opcode
WCR/ACR
addresses
register data
(sent by slave on SDA)
D
5
4
CS
Rising
Edge
0
1
0
1
0
0
A
1
A
0
1
0
0
1
0
0
P
1
P
0
0
0
D
D
3
D
2
D
1
D
0
CS
Falling
Edge
device
instruction
WCR/ACR
addresses
register data
(sent by master on SDA)
D
5
4
CS
Rising
Edge
0
1
0
1
0
0
A
1
0
1
0
0
0
P
1
P
0
0
0
D
D
3
D
2
D
1
D
0
CS
Falling
Edge
device
instruction
opcode
WCR/ACR/DR
addresses
R
1
0
register data
(sent by master on SDA)
D
5
4
CS
Rising
Edge
0 1 0 1 0 0
A
1 0 1 1
R
P
1
P
0
0 0
D
D
3
D
2
D
1
D
0
CS
Falling
Edge
device
instruction
opcode
WCR/ACR/DR
addresses
R
1
0
register data
(sent by master on SDA)
D
5
4
CS
Falling
Edge
HIGH-VOLTAGE
WRITE CYCLE
0 1 0 1 0 0
A
0
1 1 0 0
R
P
1
P
0
0 0
D
D
3
D
2
D
1
D
0
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