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PDF ( 数据手册 , 数据表 ) A31W33128T

零件编号 A31W33128T
描述 LCD Controller-Driver
制造商 AMIC Technology
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A31W33128T 数据手册, 描述, 功能
Preliminary
Document Title
LCD Controller-Driver
Revision History
Rev. No.
0.0
0.1
History
Initial issue
Error correction:
Pad assignment & Boot capacitor connection:
C1+ C1-
C1- C1+
C2+ C2-
C2- C2+
A31W33128 Series
LCD Controller-Driver
Issue Date
March 13, 2000
December 7, 2000
Remark
Preliminary
PRELIMINARY (December, 2000, Version 0.1)
AMIC Technology, Inc.







A31W33128T pdf, 数据表
A31W33128 Series
Input/Output Pin Function
Pin No.
20-23,
39-42
8-11,
55-58
18
19
12
13
Symbol
VSS
VDD
OSCO
OSCI
CS
A0
14 R/W
15 E
16 P/S
17 C68/80
25-26,
28-29,
31-32,
34-35
D0-7
84-211 SEG1-
SEG128
66-81 COM1-
213-228 COM32
229 COMICN1
82 COMCN2
37 FNC2
38 FNC1
42 VOUT
47 C2+
48 C2-
49 C1+
50 C1-
52 VCNT
Type
Supply
Supply
Output
Input
Input
Input
Input
Input
Input
Input
Input/
Output
Output
Output
Output
Input
Input
Output
Input
Input
Input
Input
Input
GROUND
Description
Power supply pin
Oscillator output
Oscillator input
Chip select input, low active
A0=Low: Command input.
A0=High: Display data input and outputs
68-Series R/W=High: Read, R/W=Low : Write
80-Series : Write enable, Active Low
68-Series : Enable clock signal input, Active High
80-Series : Read enable, Active Low
Parallel/serial interface select input
High : 8-bit parallel interface
Low : Serial interface
Microprocessor interface select input
High : 68-Series interface is selected
Low : 80-Series interface is selected
8bit bi-directional data bus to be connected to microprocessor’s data bus
P/S=High : 8-bit configuration data bus connection
P/S=Low : Serial interface connection
D0 Serial data input
D1 Serial clock input
D2 Serial data output
Provide the LCD segment driving signal
Provide the LCD common driving signal
Provide the Icon common driving signal
COMICN1 and COMICN2 output the same phase waveform.
LCD power control input pin
LCD power control input pin
Boosting voltage output
2nd-step boosting capacitor negative connection
2nd-step boosting capacitor positive connection
1 st-step boosting capacitor negative connection
1 st-step boosting capacitor positive connection
LCD power supply voltage control
PRELIMINARY (December, 2000, Version 0.1)
7
AMIC Technology, Inc







A31W33128T equivalent, schematic
A31W33128 Series
13. Read Modify Write , END
Read Modify Write
This command puts the chip in read modify write mode. In this mode the column address is saved before entering the
mode, and is incremented by display data write but not by display data read. During the Read Modify Write mode, all
commands are usable except the Column address set command.
End
This command relieves the A31W33128 from read modify write mode. The column address that is saved before entering
read modify write mode will be restored.
14. Boosting frequency select
Select the boosting frequency:
D1 D0
00
01
10
11
Boosting Freq.
Fosc/2
Fosc/4
Fosc/8
Fosc/16
15. RC Oscillator Circuit
The built-in RC oscillator generates the clock for the boosting frequency, and is also used in the display timing. When
using the external clock, the external clock is input to OSCI, and OSCO is left floating.
1/17 duty
1/33 duty
Used built-in RC oscillator , Rf = 1 M
Frame freq. 66.17 Hz at fosc = 18 KHz
Frame freq.68.18 Hz at fosc = 18 KHz
16. Reference Voltage Temperature Compensation Coefficient Select
This command is to set one out of 2 different temperature coefficients in order to match various liquid crystal temperature
grades.
IVREF(T2)I IVREF(T1)I
VREF =
T2 T1
T2 > T1
PRELIMINARY (December, 2000, Version 0.1)
15
AMIC Technology, Inc










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