PCF8577CTD NXP Semiconductors, PCF8577CTD Datasheet - Page 9

• Manufacturer Part Number: PCF8577CTD
• Description: LCD Drivers 64 SGMT LCD SGMT DRV
• Manufacturer: NXP Semiconductors

Specifications of PCF8577CTD

• Number Of Segments: 32
• Maximum Clock Frequency: 100 KHz
• Operating Supply Voltage: 2.5 V to 6 V
• Maximum Power Dissipation: 500 mW
• Package / Case: VSO-40
• Maximum Supply Current: 125 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PCF8577CT/3,112

Philips Semiconductors
6.10
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.
1998 Jul 30
MODE
MODE BANK
LCD direct/duplex driver with
I
2
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
C-bus interface
Display memory mapping
BANK
X
X
X
X
X
X
X
X
0
1
0
1
0
1
0
1
(1)
V
V
2
0
0
0
0
1
1
1
1
2
0
0
0
0
1
1
1
1
V
V
1
0
0
1
1
0
0
1
1
1
0
0
1
1
0
0
1
1
V
V
0
0
1
0
1
0
1
0
1
0
0
1
0
1
0
1
0
1
SEGMENT/
SEGMENT/
REGISTER
REGISTER
BIT/
BIT/
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
MSB
MSB
S16
S16
S24
S24
S32
S32
S16
S16
S24
S24
S32
S32
S8
S8
S8
S8
7
7
S15
S15
S23
S23
S31
S31
S15
S15
S23
S23
S31
S31
9
S7
S7
S7
S7
6
6
S14
S14
S22
S22
S30
S30
S14
S14
S22
S22
S30
S30
S6
S6
S6
S6
5
5
S13
S13
S21
S21
S29
S29
S13
S13
S21
S21
S29
S29
S5
S5
S5
S5
4
4
S12
S12
S20
S20
S28
S28
S12
S12
S20
S20
S28
S28
S4
S4
S4
S4
3
3
S19
S19
S27
S27
S11
S11
S19
S19
S27
S27
S11
S11
S3
S3
S3
S3
2
2
S10
S10
S18
S18
S26
S26
S10
S10
S18
S18
S26
S26
S2
S2
S2
S2
1
1
Product specification
PCF8577C
LSB
LSB
S17
S17
S25
S25
S17
S17
S25
S25
S1
S1
S9
S9
S1
S1
S9
S9
0
0
PLANE
PLANE
BACK-
BACK-
BP1
BP1
BP1
BP1
BP1
BP1
BP1
BP1
BP1
BP2
BP1
BP2
BP1
BP2
BP1
BP2