PCF8576CT NXP Semiconductors, PCF8576CT Datasheet - Page 28

• Manufacturer Part Number: PCF8576CT
• Manufacturer: NXP Semiconductors

Specifications of PCF8576CT

• Operating Supply Voltage (typ): 2.5/3.3/5V
• Number Of Digits: 20
• Number Of Segments: 160
• Package Type: VSO
• Pin Count: 56
• Mounting: Surface Mount
• Power Dissipation: 400mW
• Frequency (max): 315KHz
• Operating Supply Voltage (min): 2V
• Operating Supply Voltage (max): 6V
• Lead Free Status / Rohs Status: Compliant

NXP Semiconductors
9. Internal circuitry
PCF8576C_9
Product data sheet
8.3.4 Bank select command
8.3.5 Blink command
8.4 Display controller
Table 15.
[1]
Table 16.
Table 17.
The display controller executes the commands identified by the command decoder. It
contains the status registers of the PCF8576C and coordinates their effects. The
controller is also responsible for loading display data into the display RAM as required by
the filling order.
Bank
Input bank
Output bank
Blink frequency
off
1
2
3
Blink mode
normal blinking
alternate RAM bank blinking
Fig 20. Device protection diagram
The bank select command has no effect in 1:3 or 1:4 multiplex drive modes.
Bank select command
Blink frequency command bit description
Blink mode command bit description
CLK, OSC, A0 to A2,
SA0,
Mode
Static
RAM bit 0
RAM bit 2
RAM bit 0
RAM bit 2
SYNC
Rev. 09 — 9 July 2009
SDA, SCL
V
V
V
LCD
DD
SS
[1]
Bit
BF1
0
0
1
1
1:2 multiplex drive mode
RAM bits 0 and 1
RAM bits 2 and 3
RAM bits 0 and 1
RAM bits 2 and 3
Universal LCD driver for low multiplex rates
Bit A
0
1
BP0 to BP3,
S0 to S39
013aaa109
BF0
0
1
0
1
PCF8576C
Bit
I
O
© NXP B.V. 2009. All rights reserved.
Value
0
1
0
1
28 of 56