PCA9620H NXP [NXP Semiconductors], PCA9620H Datasheet - Page 7

• Manufacturer Part Number: PCA9620H
• Description: Universal LCD driver for low multiplex rates
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
PCA9620
Product data sheet
7.1.4 Command: charge-pump-ctrl
7.1.5 Command: temp-msr-ctrl
7.1.6 Command: set-VPR-MSB and set-VPR-LSB
The charge-pump-ctrl command enables or disables the internal V
controls the charge pump voltage multiplier setting.
Table 8.
[1]
The temp-msr-ctrl command enables or disables the temperature measurement block and
the temperature compensation of V
Table 9.
For further information, see
[1]
With these two instructions it is possible to set the target V
charge pump, see
Table 10.
[1]
Bit
7 to 2
1
0
Bit
7 to 2
1
0
Bit
7 to 4
3 to 0
Default value.
Default value.
Default value.
Symbol
-
CPE
CPC
Symbol
-
TCE
TME
Symbol
-
VPR[7:4]
Charge-pump-ctrl - charge pump control command bit description
Temp-msr-ctrl - temperature measurement control command bit description
Set-VPR-MSB - set VPR MSB command bit description
All information provided in this document is subject to legal disclaimers.
Section 7.4.3 on page
Rev. 1 — 9 December 2010
Section 7.4.8 on page
Value
110000
0
1
0
1
Value
110010
0
1
0
1
Value
0100
0000
[1]
[1]
[1]
[1]
[1]
LCD
to 1111 the four most significant bits of VPR[7:0]
.
31.
Universal LCD driver for low multiplex rates
Description
fixed value
charge pump switch
charge pump voltage multiplier setting
Description
fixed value
temperature compensation switch
temperature measurement switch
Description
fixed value
36.
charge pump disabled;
no internal V
external supply of V
charge pump enabled
V
V
no temperature compensation of V
possible
temperature compensation of V
temperature measurement disabled;
no temperature readout possible
temperature measurement enabled;
temperature readout possible
LCD
LCD
= 2 × V
= 3 × V
LCD
LCD
DD2
DD2
generation;
voltage for the internal
LCD
LCD
PCA9620
generation and
© NXP B.V. 2010. All rights reserved.
LCD
LCD
possible
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