10
FN8174.5
October 15, 2015
Submit Document Feedback
Read Data Register (DR)
Write Data Register (DR)
Transfer Wiper Counter Register (WCR) to Data Register (DR)
Transfer Data Register (DR) to Wiper Counter Register (WCR) (Notes 5
, 6)
Increment/Decrement Wiper Counter Register (WCR) (Notes 5
, 6, 7, 8, 9)
Read Status Register (SR) (Note 5
)
CS
Falling
Edge
Device Type
Identifier
Device
Addresses
Instruction
Opcode
DR/Bank
Addresses
Data Byte
(Sent by X9271 on SO)
CS
Rising
Edge
0 1 0 100A1A01011RBRAP1 P0 D7D 6D5D4D3D2D1D0
CS
Falling
Edge
Device Type
Identifier
Device
Addresses
Instruction
Opcode
DR/Bank
Addresses
Data Byte
(Sent by Host on SI)
CS
Rising
Edge
HIGH-VOLTAGE
WRITE CYCLE
0 1 0 1 0 0 A1 A0 1 1 0 0 RB RA P1 P0 D7 D 6 D5 D4 D3 D2 D1 D0
CS
Falling
Edge
Device Type
Identifier
Device
Addresses
Instruction
Opcode
DR/Bank
Addresses
CS
Rising
Edge
HIGH-VOLTAGE
WRITE CYCLE
0 1 0 1 00A1 A01110 RB RA 0 0
CS
Falling
Edge
Device Type
Identifier
Device
Addresses
Instruction
Opcode
DR/Bank
Addresses
CS
Rising
Edge
0 1 0 1 00 A1 A0 1101RB RA 0 0
CS
Falling
Edge
Device Type
Identifier
Device
Addresses
Instruction
Opcode
DR/Bank
Addresses
Increment/Decrement
(Sent by Master on SDA)
CS
Rising
Edge
0 1 0 1 0 0 A1 A0 0 0 1 0 X X 0 0 I/D I/D . . . . I/D I/D
CS
Falling
Edge
Device Type
Identifier
Device
Addresses
Instruction
Opcode
DR/Bank
Addresses
Data Byte
(Sent by X9271 on SO)
CS
Rising
Edge
010100A1 A0010100010000000 WIP
NOTES:
5. “A1 ~ A0”: stands for the device addresses sent by the master.
6. WCRx refers to wiper position data in the Wiper Counter Register.
7. “I”: stands for the increment operation. SI held HIGH during active SCK phase (high).
8. “D”: stands for the decrement operation. SI held LOW during active SCK phase (high).
9. “X:”: Don’t Care.
X9271
11
FN8174.5
October 15, 2015
Submit Document Feedback
Absolute Maximum Ratings Thermal Information
Temperature Under Bias . . . . . . . . . . . . . . . . . . . . .-65°C to +135°C
Voltage on SCK, any Address Input,
with Respect to VSS. . . . . . . . . . . . . . . . . . . . . . . . . . . -1V to +7V
V = |(VH - VL)| . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V
I
W
(10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±6mA
Supply Voltage (V
CC
) Limits:
X9271 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V ± 10%
X9271-2.7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
Recommended Operating Conditions
Temperature Range (Commercial). . . . . . . . . . . . . . . . 0°C to +70°C
Temperature Range (Industrial) . . . . . . . . . . . . . . . . -40°C to +85°C
Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . +300°C
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
Analog Characteristics Across recommended industrial operating conditions unless otherwise specified.
SYMBOL PARAMETER
LIMITS
TEST CONDITIONS
MIN
(Note 17
)TYP
MAX
(Note 17)UNITS
R
TOTAL
End to End Resistance 50 U version
End to End Resistance
Toler an ce
±20 %
Power Rating 50 mW +25°C, each pot
I
W
Wiper Current ±3 mA
R
W
Wiper Resistance 300 WI
W
= ± 3mA at V
CC
= 3V
R
W
Wiper Resistance 150 WI
W
= ± 3mA at V
CC
= 5V
V
TERM
Voltage on any R
H
or R
L
Pin V
SS
V
CC
VV
SS
= 0V
Noise -120 dBVHz
Ref: 1V
Resolution
0.4 %
Absolute Linearity (Note 10
) ±1 MI
(Note 12
)
R
w(n)(actual) -
R
w(n)(expected)
(Note 14)
Relative Linearity (Note 11
) ±0.2 MI
(Note 12
)
R
w(n + 1)
- [R
w(n) + MI
] (Note 14)
Temperature Coefficient of
R
TOTAL
±300 ppm/C
Ratiometric Temp.
Coefficient
20 ppm/°C
C
H
/C
L
/C
W
Potentiometer
Capacitance
10/10/25 pF See macro model
NOTES:
10. Absolute linearity is used to determine actual wiper voltage versus expected voltage as determined by wiper position when used as a
potentiometer.
11. Relative linearity is used to determine actual change in voltage between two successive tap positions when used as a
potentiometer. It is a measure of the error in step size.
12. MI = RTOT / 255 or (R
H
- R
L
) / 255, single pot.
13. During power-up, V
CC
> V
H
, V
L
, and V
W
.
14. n = 0, 1, 2, …,255; m = 0, 1, 2, …., 254.
X9271
12
FN8174.5
October 15, 2015
Submit Document Feedback
Endurance and Data Retention
Capacitance
Power-Up Timing
A.C. Test Conditions
NOTES:
15. This parameter is not 100% tested.
16. t
PUR
and t
PUW
are the delays required from the time the (last) power supply (V
CC
-) is stable until the specific instruction can be issued. These
parameters are periodically sampled and are not 100% tested.
17. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
D.C. Operating Characteristics Across the recommended operating conditions unless otherwise specified.
SYMBOL PARAMETER
LIMITS
TEST CONDITIONS
MIN
(
Note 17)TYP
MAX
(Note 17)UNITS
I
CC1
V
CC
Supply Current
(Active)
400 µA f
SCK
= 2.5MHz, SO = Open, V
CC
= 6V
Other Inputs = V
SS
I
CC2
V
CC
Supply Current
(Nonvolatile Write)
15mAf
SCK
= 2.5MHz, SO = Open, V
CC
= 6V
Other Inputs = V
SS
I
SB
V
CC
Current (Standby) 3 µA SCK = SI = V
SS
, Addr. = V
SS
,
CS
= V
CC
= 6V
I
LI
Input Leakage Current 10 µA V
IN
= V
SS
to V
CC
I
LO
Output Leakage Current 10 µA V
OUT
= V
SS
to V
CC
V
IH
Input HIGH Voltage V
CC
x 0.7 V
CC
+ 1 V
V
IL
Input LOW Voltage -1 V
CC
x 0.3 V
V
OL
Output LOW Voltage 0.4 V I
OL
= 3mA
V
OH
Output HIGH Voltage V
CC
- 0.8 V I
OH
= -1mA, V
CC
+3V
V
OH
Output HIGH Voltage V
CC
- 0.4 V I
OH
= -0.4mA, V
CC
+3V
PARAMETER
MIN.
(Note 17) UNITS
Minimum Endurance 100,000 Data changes per bit per register
Data Retention 100 Years
SYMBOL TEST
MAX.
(Note 17) UNITS TEST CONDITIONS
C
IN/OUT
(Note 15) Input / Output Capacitance (SI) 8 pF V
OUT
= 0V
C
OUT
(Note 15) Output Capacitance (SO) 8 pF V
OUT
= 0V
C
IN
(Note 15) Input Capacitance (A0, CS, WP, HOLD, and SCK) 6 pF V
IN
= 0V
SYMBOL PARAMETER
MIN.
(Note 17)
MAX.
(Note 17) UNITS
t
r
V
CC
(Note 15)V
CC
Power-up Rate 0.2 50 V/ms
t
PUR
(Note 16) Power-up to Initiation of Read Operation 1 ms
t
PUW
(Note 16) Power-up to Initiation of Write Operation 50 ms
INPUT PULSE LEVELS V
CC
x 0.1 to V
CC
x 0.9
Input Rise and Fall Times 10ns
Input and Output Timing Level V
CC
x 0.5
X9271

X9271UV14IZ-2.7T1

Mfr. #:
Manufacturer:
Renesas / Intersil
Description:
Digital Potentiometer ICs SINGLE DCP 50KOHM 256 TAP SPI
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union