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PCA9620 Datasheet(PDF) 15 Page - NXP Semiconductors

Part # PCA9620
Description  Universal LCD driver for low multiplex rates
PDF  71 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCA9620 Datasheet(HTML) 15 Page - NXP Semiconductors

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PCA9620
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 1 — 9 December 2010
15 of 71
NXP Semiconductors
PCA9620
Universal LCD driver for low multiplex rates
9. Temperature filter is disabled.
10. The internal VLCD voltage generation is disabled. The charge pump is switched off.
11. The VLCD temperature compensation is enabled.
12. The display is disabled.
Remark: Do not transfer data on the I2C-bus for at least 1 ms after a power-on to allow
the reset action to complete.
The first command sent to the device after the power-on event must be the initialize
command (see Section 7.1.1 on page 5).
After Power-On Reset (POR) and before enabling the display, the RAM content should be
brought to a defined status
• by clearing it (setting it all logic 0) or
• by writing meaningful content (e.g. a graphic)
otherwise unwanted display artifacts may appear on the display.
Table 25.
Reset states
Bits labeled - are undefined at power-on.
Command name
Bits
7
6
5
4
3
2
1
0
initialize
0
0
1
1
1
0
1
0
OTP-refresh
1
101
00
00
oscillator-ctrl
1
100
11
00
charge-pump-ctrl
1
100
00
00
temp-msr-ctrl
1
1
0
0
1
0
1
1
temp-comp-SLA
0
001
10
00
temp-comp-SLB
0
010
00
00
temp-comp-SLC
0
010
10
00
temp-comp-SLD
0
011
00
00
set-VPR-MSB
0
100
00
00
set-VPR-LSB
0
101
00
00
display-enable
0
0
1
1
1
0
0
0
set-MUX-mode
0
000
00
00
set-bias-mode
1
100
01
00
load-data-pointer
1
0
0
0
0
0
0
0
frame-frequency
0
1
1
0
1
1
1
0
input-bank-select
0
000
10
00
output-bank-select
0
0
0
1
0
0
0
0
write-RAM-data
-
---
--
--
temp-read
0
100
00
00
invmode_CPF_ctrl
1
101
01
00
temp-filter
1
101
00
10



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