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Document Number: LSDDRDSLRDR REV 1
DSLR CAMERA
STN LCD DISPLAY
DRIVERS
PCA8561
Parameter Value
Width 5.0 mm
Length 5.0 mm
Height 0.85 mm
Pitch 0.5 mm
Soldering wettable flanks
Small displays integrated in the knobs:
The TSSOP package is to big to be mounted inside the
knob of a climate control
Small displays integrated in the clusters in combination
with the big TFT display: The MCU is advanced for TFT
controller and does not encompass any LCD driver.
Wettable flanks:
The exposed edge of each terminal contains a small
plated cavity, ensuring the solder flows into it and
adheres to the side of the terminal. Non-wetting of the
sides can be detected easily, allowing a cost-effective
optical inspection process.
Main features PCF8551 and PCF8553
Resolution (max) PCF8551: 4 x 36 = 144 segments
PCF8553: 4 x 40 = 160 segments
VDD range [V] 1.8V ÷ 5.5V
VLCD external [V] 1.8V ÷ 5.5V
Mux rates 1:1, 1:2, 1:3, 1:4
Bias configuration
static,1/2, 1/3
Oscillator Internal or external selectable through
command
Frame Freq. 32 Hz ÷ 128 Hz programmable
Reset POR circuit with POR enable input pin
(PORE) plus Software reset command
and reset pin
Interface
PCF8551ATT: 2-line I
2
C; PCF8551BTT:
3-line SPI
PCF8553DTT: selectable 2-line I
2
C or
3-line SPI
Power consumption <<100nA in power down; ~4uA typ.
in operation mode, default, display
attached and all segments ON
Operating Temp Range -40°C to +85°C
Package PCF8551: TSSOP48 (12.5 x 6.1 x 0.95)
PCF8553: TSSOP56 (14.0 x 6.1 x 0.95)
ESD HBM ± 5 kV; CDM ± 500 V
Qualification Automotive versions available
On request, PCF8551 and PCF8553 could be released with
QFN48 and QFN60 packages respectively
PCF8551 AND PCF8553
Key Values:
• Low voltage / Low power
• High reliability
• Ease of use
• Low cost
LCD DISPLAY FOR DIGITAL CAMERAS BACKSIDE INFORMATION DISPLAY
• Display Information and settings such as file type, file
size, file number, connectivity, etc.
• Estimated ~100+ segments
Information and settings such as image quality, image size,
ISO sensitivity, WB settings, etc
LCD DRIVERS RECOMMENDATIONS FOR
DSLR CAMERAS
PCA8561
SHOULDER INFORMATION DISPLAY
• Display status information about most of the shooting
settings
• Estimated ~ 140+ segments
FINDER INFORMATION DISPLAY
• Display status information about the basic shooting settings
• Estimated ~ 120+ segments
FINDER FOCUS POINT DISPLAY
• Display the AF points
• Estimated ~ 120+ segments
LCD DISPLAY FOR DIGITAL CAMERAS
LCD Drivers used
Digital
Cameras
Interchangeable
Lens Cameras
(ILC)
Digital Single
Reflex (DSLR)
Cameras
Non reflex
TFT Display used as viewfinder
Built-in Lens
Cameras
- TFT Display (Live view)
- Electronic viewfinder (EVF): TFT display
It includes the Mirror-less interchangeable cameras
(MILC) plus other compact system cameras and the
rangefinder cameras
It includes the Compact P&S (Point & Shoot)
cameras and the so-called Bridge cameras
with fixed lenses
- TFT Display (only some models offer the live view)
- Information displays (shoulder and backside displ
ays)
- Information displays inside the Optical viewfinder (OVF)
1. Backside Information Display
• Display at backside to indicate
different mode settings
2. Shoulder Information Display
• Display on shoulder to indicate
general camera status, flash adjust
mode, B/W mode, metering
mode, shots remaining, etc.
3. Finder Information Display
• Display inside the optical
viewfinder (OVF) that displays
some settings such as shutter
speed, iris, magnification, etc.
4. Finder Focus Point Display
(superimpose)
• Display inside the optical
viewfinder (OVF) that overlays
the mirror and displays the auto
focus points, gridlines, icon
warnings, etc
DSLR
Product
Type
Backside
Information
Display
Shoulder
Information
Display
Finder
Information
Display
Finder
Focus Point
Display
High-end Y Y Y Y
Medium-
end
- Y Y Y
Low-end - - Y Y
Min
Resolution
100+
segments
140+
segments
120+
segments
120+
segments
Max
Resolution
140
segments
200
segments
140
segments
200
segments
PWM
channels ?
No PWM No PWM No PWM 3 PWM/
LED (?)
IDD Ultra-LOW
(display ON
in standby)
Ultra-LOW
(display ON
in standby)
LOW
(display is off
in standby)
LOW (display
is off in
standby)
LCD Driver
Proposal
PCF8551
(4x36) in
QFN48
package
(TBD)
PCF8553
(4x40) in
QFN56
package
(TBD)
PCF8551
(4x36) in
QFN48
package
PCF8553
(4x40) in
QFN56
package
Main features PCA8561
Resolution (max) 4 x 18 = 72 segments
VDD range [V] 1.8V ÷ 5.5V
VLCD external [V] 1.8V ÷ 5.5V
Mux rates 1:1, 1:2, 1:3, 1:4
Bias configuration static,1/2, 1/3
Oscillator Internal or external selectable
through command
Frame Freq. 32 Hz ÷ 256 Hz programmable
Reset Input reset pin (RST); software
reset command; POR circuit with
POR enable input pin (PORE)
Interface PCA8561AHN: 2-lines I
2
C
PCA8561BHN: 3-lines SPI
Others A0, A1 pins for I
2
C slave address
selection
Operating Temp Range -40°C to +105°C
Package HVQFN32 (with wettable flanks)
ESD HBM ± 3.5 kV
Qualification AEC-Q100 grade 2