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PCF8577CU/10 数据表(PDF) 9 Page - NXP Semiconductors

部件名 PCF8577CU/10
功能描述  LCD direct/duplex driver with I2C-bus interface
PDF  28 Pages
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制造商  PHILIPS [NXP Semiconductors]
网页  http://www.nxp.com
标志 PHILIPS - NXP Semiconductors

PCF8577CU/10 数据表(HTML) 9 Page - NXP Semiconductors

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1998 Jul 30
9
Philips Semiconductors
Product specification
LCD direct/duplex driver with
I2C-bus interface
PCF8577C
6.10
Display memory mapping
The mapping between the eight segment registers and the segment outputs S1 to S32 is given in Tables 1 and 2.
Since only one register bit per segment is needed in the direct drive mode, the BANK bit allows swapping of display
information. If BANK is set to logic 0 even bytes (BANK A) are displayed; if BANK is set to logic 1 odd bytes (BANK B)
are displayed. BP1 is always used for the backplane output in the direct drive mode. In duplex mode even bytes
(BANK A) correspond to backplane 1 (BP1) and odd bytes (BANK B) correspond to backplane 2 (BP2).
Table 1
Segment byte-segment driver mapping in direct drive mode
Mapping example: bit 0 of register 7 controls the LCD segment S25 if BANK bit is a logic 1.
Table 2
Segment byte-segment driver mapping in duplex mode
Note
1. Where X = don’t care.
Mapping example: bit 7 of register 5 controls the LCD segment S24/BP2.
MODE
BANK
V
2
V
1
V
0
SEGMENT/
BIT/
REGISTER
MSB
7
654321
LSB
0
BACK-
PLANE
0
0
0
0
0
0
S8
S7
S6
S5
S4
S3
S2
S1
BP1
0
1
0
0
1
1
S8
S7
S6
S5
S4
S3
S2
S1
BP1
0
0
0
1
0
2
S16
S15
S14
S13
S12
S11
S10
S9
BP1
0
1
0
1
1
3
S16
S15
S14
S13
S12
S11
S10
S9
BP1
0
0
1
0
0
4
S24
S23
S22
S21
S20
S19
S18
S17
BP1
0
1
1
0
1
5
S24
S23
S22
S21
S20
S19
S18
S17
BP1
0
0
1
1
0
6
S32
S31
S30
S29
S28
S27
S26
S25
BP1
0
1
1
1
1
7
S32
S31
S30
S29
S28
S27
S26
S25
BP1
MODE
BANK(1)
V
2
V
1
V
0
SEGMENT/
BIT/
REGISTER
MSB
7
654321
LSB
0
BACK-
PLANE
1
X
0
0
0
0
S8S7S6S5S4S3S2S1
BP1
1
X
0
0
1
1
S8S7S6S5S4S3S2S1
BP2
1
X
0
1
0
2
S16
S15
S14
S13
S12
S11
S10
S9
BP1
1
X
0
1
1
3
S16
S15
S14
S13
S12
S11
S10
S9
BP2
1
X
1
0
0
4
S24
S23
S22
S21
S20
S19
S18
S17
BP1
1
X
1
0
1
5
S24
S23
S22
S21
S20
S19
S18
S17
BP2
1
X
1
1
0
6
S32
S31
S30
S29
S28
S27
S26
S25
BP1
1
X
1
1
1
7
S32
S31
S30
S29
S28
S27
S26
S25
BP2



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