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參數(shù)資料
| 型號(hào)： | PCF8820 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 67 x 101 Grey-scale/ECB colour dot matrix LCD driver |
| 中文描述： | 67 × 101 Grey-scale/ECB彩色點(diǎn)陣LCD驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 18/60頁 |
| 文件大?。?/td> | 316K |
| 代理商： | PCF8820 |
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2000 Dec 07
18
Philips Semiconductors
Product specification
67
×
101 Grey-scale/ECB colour dot matrix
LCD driver
PCF8820
For a read sequence (see Fig.18), the addressed
PCF8820 will immediately start to output the requested
data until a NOT acknowledge is transmitted by the
master. Before the read access, the user has to set bit RS
to the appropriate value by a preceding write access. The
sequence should be terminated by a STOP condition
when no further access is required, or by a RE-START
condition if further access is required.
7.18.6
C
OMMAND DECODER
The command decoder identifies command words
received via the I
2
C-bus.
Bit 7 of the control byte is named bit Co (see Fig.16):
Bit Co = 1 indicates that only one command byte or
DDRAM data byte will follow next
Bit Co = 0 indicates that a stream of command bytes or
DDRAM data bytes will follow next depending on last
status of bit RS.
Bit 6 of a control byte is named bit RS:
Bit RS = 1 indicates that another DDRAM data byte will
follow next
Bit RS = 0 indicates that another command byte will
follow next.
The definition of bits Co and RS is shown in Table 1.
7.18.7
D
ISPLAY DATA BYTE
A display data byte for grey-scale is shown in Fig.19.
MGT126
S 0 1 1 1 1
S
A
0
1 A
acknowledgement
from PCF8820
not acknowledgement
from master
temperature
readout value
A P
S
A
1
slave address
R/W
STOP condition
Fig.18 Read sequence: master receives bytes
from slave transmitter status register.
MGT127
P3
LSB
pixel 3
pixel 2
pixel 1
pixel 0
P3
MSB
P2
LSB
P2
MSB
P1
LSB
P1
MSB
P0
LSB
P0
MSB
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
MSB
LSB
Fig.19 Grey-scale display data byte.
Table 1
Definition of bits Co and RS
BIT
VALUE
ACTION
Co
0
last control byte to be sent; only a stream of data bytes are allowed to follow; this stream may
only be terminated by a STOP or RE-START condition
another control byte will follow the data byte unless a STOP or RE-START condition is
received
data byte will be decoded and used to set up the device
data byte will return the sensor temperature read-out
data byte will be stored in the DDRAM
RAM read-back (not supported)
1
RS
0
1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCF8820U | 67 x 101 Grey-scale/ECB colour dot matrix LCD driver |
| PCF8831 | STN RGB - 160 output row driver |
| PCF8831U | STN RGB - 160 output row driver |
| PCF8833 | STN RGB - 132 X 132 X 3 driver |
| PCF88331 | STN RGB - 132 X 132 X 3 driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCF8820U | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:67 x 101 Grey-scale/ECB colour dot matrix LCD driver |
| PCF8831 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:STN RGB - 160 output row driver |
| PCF8831U | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:STN RGB - 160 output row driver |
| PCF8832 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:STN RGB - 384 output column driver |
| PCF8833 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:STN RGB - 132 X 132 X 3 driver |
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