PCA8537 View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
Manufacturer
PCA8537 Datasheet PDF : 82 Pages
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NXP Semiconductors
PCA8537
Automotive LCD driver for multiplex rates up to 1:8
Table 24. Reset state
Reset state of configuration bits shown in the command table format for clarity. The bit labeled with - has an undefined reset
state.
Command name Bits
7
6
5
4
3
2
1
0
Oscillator-ctrl
1
1
0
0
1
1
COE = 0 OSC = 0
Charge-pump-ctrl 1
1
0
0
0
0
CPE = 0 CPC = 0
Temp-msr-ctrl
1
1
0
0
1
0
TCE = 1 TME = 1
Temp-comp
0
0
0
1
1
SLA[2:0] = 000
0
0
1
0
0
SLB[2:0] = 000
0
0
1
0
1
SLC[2:0] = 000
0
0
1
1
0
SLD[2:0] = 000
Set-VPR
0
1
0
0
VPR[7:4] = 0000
0
1
0
1
VPR[3:0] = 0000
Display-enable
0
0
1
1
1
0
0
E=0
Set-MUX-mode
0
0
0
0
0
M[2:0] = 000
Set-bias-mode
1
1
0
0
0
1
B[1:0] = 00
Load-data-pointer 1
0
P[5:0] is undefined
Frame-frequency
0
1
1
F[4:0] = 01110
Bank-select
0
0
0
0
1
0
IBS = 0 OBS = 0
Invmode_ctrl
1
1
0
1
0
1
LF = 0
-
Temp-filter
1
1
0
1
0
0
1
TFE = 0
Remark: Do not transfer data on the I2C-bus or SPI-bus for at least 1 ms after a power-on
reset 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 8.1.1).
After POR and before enabling the display, the RAM content should be brought to a
defined status
• by clearing it (setting it all to logic 0) or
• by writing meaningful content (for example, a graphic)
otherwise unwanted display artifacts may appear on the display.
8.2.2 RESET pin function
The RESET pin of the PCA8537 resets all the registers to their default state. The reset
state is given in Table 24. The RAM contents remain unchanged. After the reset signal is
removed, the PCA8537 will behave in the same manner as after POR. See Section 8.2.1
for details.
8.2.3 Recommended start-up sequences
This chapter describes how to proceed with the initialization of the chip in different
application modes.
PCA8537
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 7 April 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
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