PCF85176H/1,518 NXP Semiconductors, PCF85176H/1,518 Datasheet - Page 6

• Manufacturer Part Number: PCF85176H/1,518
• Description: IC LCD DISPLAY DVR 40SEG 64TQFP
• Manufacturer: NXP Semiconductors

Specifications of PCF85176H/1,518

• Package / Case: 64-TQFP
• Display Type: LCD
• Configuration: 40 Segment
• Interface: I²C
• Current - Supply: 20µA
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Number Of Digits: 20
• Number Of Segments: 40
• Maximum Clock Frequency: 2640 Hz
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 95 C
• Attached Touch Screen: No
• Maximum Supply Current: 20 uA
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Digits Or Characters: -
• Lead Free Status / Rohs Status: Details
• Other names: 568-5932-2; PCF85176H/1,518

NXP Semiconductors
7. Functional description
Table 4.
PCF85176_1
Product data sheet
Number of:
Backplanes
4
3
2
1
Display configurations
Elements
160
120
80
40
7.1 Power-On Reset (POR)
The PCF85176 is a versatile peripheral device designed to interface any
microprocessor or microcontroller with a wide variety of LCDs. It can directly drive any
static or multiplexed LCD containing up to four backplanes and up to 40 segments.
The possible display configurations of the PCF85176 depend on the number of active
backplane outputs required. A selection of display configurations is shown in
of these configurations can be implemented in the typical system shown in
The host microprocessor or microcontroller maintains the 2-line I
channel with the PCF85176. The internal oscillator is enabled by connecting
pin OSC to pin V
are generated internally. The only other connections required to complete the system are
the power supplies (V
At power-on the PCF85176 resets to the following starting conditions:
Fig 4.
•
•
•
•
•
•
All backplane and segment outputs are set to V
The selected drive mode is: 1:4 multiplex with
Blinking is switched off
Input and output bank selectors are reset
The I
The data pointer and the subaddress counter are cleared (set to logic 0)
7-segment alphanumeric
Digits
20
15
10
5
V
V
SS
DD
CONTROLLER
PROCESSOR/
2
The resistance of the power lines must be kept to a minimum.
Typical system configuration
C-bus interface is initialized
MICRO-
MICRO-
HOST
Indicator symbols
20
15
10
5
R ≤
All information provided in this document is subject to legal disclaimers.
SS
2C
. The appropriate biasing voltages for the multiplexed LCD waveforms
t
r
B
DD
Rev. 01 — 14 April 2010
, V
SS
, and V
SDA
OSC
SCL
14-segment alphanumeric
Characters
10
8
5
2
LCD
A0
) and the LCD panel chosen for the application.
PCF85176
A1
V
DD
Universal LCD driver for low multiplex rates
A2
V
LCD
SA0
Indicator symbols
20
8
10
12
1
⁄
LCD
3
V
bias
SS
40 segment drives
4 backplanes
2
C-bus communication
PCF85176
Dot matrix
160 dots (4 × 40)
120 dots (3 × 40)
80 dots (2 × 40)
40 dots (1 × 40)
© NXP B.V. 2010. All rights reserved.
LCD PANEL
(up to 160
elements)
013aaa071
Figure
Table
4.
4. All
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