Serial Camera Module
DATASHEET
DOCUMENT DATE:
12
th
June 2021
DOCUMENT REVISION:
1.3
uCAM-III
Uncontrolled Copy when printed or downloaded.
Please refer to the 4D Systems website for the latest
Revision of this document
W W W . 4 D S Y S T E M S . C O M . A U
Table of Contents
Table of Contents
1. Description ......................................................................................................................4
2. Features...........................................................................................................................4
3. Pin Configuration and Dimensions ....................................................................................5
4. Pin Descriptions ...............................................................................................................6
5. Serial Interface - UART .....................................................................................................6
5.1. Single Byte Timing ................................................................................................................... 6
5.2. Single Byte Timing ................................................................................................................... 6
5.3. Auto-Baud Detect ................................................................................................................... 7
5.4. Setting the Baud Rates ............................................................................................................ 7
5.5. Setting the Baud Rates ............................................................................................................ 7
6. uCAM-III Power Supply .....................................................................................................7
7. Command Set ..................................................................................................................8
7.1. Initial (AA01h) ......................................................................................................................... 8
7.2. GET PICTURE (AA04h) ............................................................................................................. 9
7.3. SNAPSHOT (AA05h) ................................................................................................................. 9
7.4. SET PACKAGE SIZE (AA06h) ..................................................................................................... 9
7.5. SET BAUD RATE (AA07h) ......................................................................................................... 10
7.6. RESET (AA08h)......................................................................................................................... 10
7.7. DATA (AA0Ah) ......................................................................................................................... 10
7.8. SYNC (AA0Dh) ......................................................................................................................... 11
7.9. ACK (AA0Eh) ............................................................................................................................ 11
7.10. NAK (AA0Fh) .......................................................................................................................... 11
7.11. LIGHT (AA13h) ....................................................................................................................... 12
7.12. CONTRAST / BRIGHTNESS / EXPOSURE (AA14h) ................................................................... 12
7.13. SLEEP (AA15h) ....................................................................................................................... 13
8. Command Protocol ........................................................................................................ 14
8.1. Synchronising the uCAM-III ..................................................................................................... 14
8.2. INITIAL, GET PICTURE, SNAPSHOT, SET PACKAGE SIZE, RESET Commands ............................ 15
8.3. Taking SNAPSHOT Pictures ..................................................................................................... 16
9. Lens Information ............................................................................................................ 17
9.1. 56 Degree Lens Drawing ......................................................................................................... 18
9.2. 76 Degree Lens Drawing ......................................................................................................... 18
9.3. 116 Degree Lens Drawing ....................................................................................................... 19
10. Troubleshooting ........................................................................................................... 20
uCAM-III
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Table of Contents
11. Embedded Display Modules ......................................................................................... 21
12. 4D Systems - Workshop 4 IDE ....................................................................................... 22
13. Specifications and Ratings ............................................................................................ 23
13.1. POA030R Spectral Response [5.55um x 5.55um] ................................................................. 24
14. Ordering Information ................................................................................................... 24
15. Hardware Revision History ........................................................................................... 25
16. Datasheet Revision History ........................................................................................... 25
17. Legal Notice ................................................................................................................. 26
18. Contact Information ..................................................................................................... 26
uCAM-III
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Serial Camera Module
1. Description
The
uCAM-III
(microCAM-III) is a highly integrated
serial camera module which can be attached to any
host system that requires a video camera or a JPEG
compressed still camera for embedded imaging
applications.
The uCAM-III is an updated version of the uCAM-II, but
is backward compatible and interchangeable, and has
a few enhancements over the previous model which
can be taken advantage of (refer Revision History
section).
The module uses a CMOS VGA colour sensor along
with a JPEG compression chip that provides a low cost
and low powered camera system. The module has an
on-board serial interface (TTL) that is suitable for a
direct connection to any host micro-controller UART
or a PC system COM port.
The uCAM-III is capable of outputting both RAW
format and JPEG format images.
User commands are sent using a simple serial protocol
that can instruct the camera to send low resolution
(80x60 to 160x120) single frame raw images for
viewing or high resolution (160x128 to 640x480) JPEG
images for storage or viewing.
The uCAM-III comes in a compact form factor with a
built in lens and a 5-wire connector that provides easy
access to both power and serial data.
There are 3 lenses available for this camera from 4D
Systems. A 56 degree (Standard), a 76 degree, and a
116 degree. These are available to purchase from 4D
Systems separately if required. The uCAM-III ships
with the 56 degree lens installed.
There is a locking nut on the barrel thread of the lens,
which is used to lock the focus in place once set, to
prevent it from inadvertently being changed.
2. Features
•
Small size, low cost and low powered camera
module for embedded imaging applications.
•
uCAM-III: 5V DC Supply nominal
•
On-board EEPROM provides a command-based
interface to external host via TTL serial link.
•
On-board 128KB of RAM, an upgrade over the
uCAM-II, which enables complex images with texture
to be captured without automatic downsampling.
•
UART: up to 3.68Mbps for transferring JPEG still
pictures or raw images.
•
On board VGA colour sensor and RAW / JPEG
CODEC for different resolutions.
•
Built-in down sampling, clamping and windowing
circuits for VGA, QVGA or 160x120 image resolutions.
•
Built-in colour conversion circuits for 16-bit CrYCbY,
8-bit gray, 16-bit RGB or standard JPEG images.
•
No external DRAM required.
•
Additions lenses available
•
Locking nut for locking focus in place
•
Weight ~6g.
•
Dimensions: 32mm x 32mm x 21mm (without lens,
including header)
•
RoHS and Reach compliant
uCAM-III
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Serial Camera Module
3. Pin Configuration and Dimensions
PIN 1
32mm
27.5mm
27.5mm
6.9mm
14.0mm
~6mm
PIN 1
2.1mm Diameter
Distance from Pins (centres)
to bottom edge of PCB =
2.3mm
PCB Thickness = ~1.6mm
2.54mm
~8.5mm
Varies with Focus
uCAM-III Pin Outs
Pin
1
2
Symbol
5V
TX
I/O
P
O
Description
Main Voltage Supply +ve input pin. 4.5V to 9.0V DC range nominal 5V.
Asynchronous Serial Transmit pin. Connect this pin to host controller Serial
Receive (Rx) signal. The host receives data from uCAM-III via this pin.
3.3V Logic
Asynchronous Serial Rec-+eive pin. Connect this pin to host controller
Serial Transmit (Tx) signal. The host transmits commands to the uCAM-III
via this pin. 3.3V Logic, however 5V Tolerant
Supply Ground.
Hardware Reset, will reset the camera, Active Low
3
4
5
RX
GND
RES
I
P
I
I = Input, O = Output, P = Power
uCAM-III
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