View source for Canon PowerShot A3100 IS

Teardown of the Canon PowerShot A3100 IS point-and-shoot camera.

12.1 MP, 1/2.3" CCD sensor, optical image stabilizer. Released in January 2010. PCB date code is 3rd week of 2010.
[[File:Canon PowerShot A3100 IS.jpg|none|thumb|Canon PowerShot A3100 IS]]
The teardown subject was dead, with missing battery, and won't power on when 3.7V is applied to the battery terminals.

Technical details, including firmware dumps, on the [https://chdk.fandom.com/wiki/A3100IS CHDK Wiki].

No service manual found.

== Teardown Pictures ==
[[File:Canon PowerShot A3100 IS Main Front.jpg|none|thumb|Main PCB, top view]]
[[File:Canon PowerShot A3100 IS Main Back.jpg|none|thumb|Main PCB, bottom view]]
[[File:Canon PowerShot A3100 IS buttons front.jpg|none|thumb|Button PCB, top view]]
[[File:Canon PowerShot A3100 IS buttons back.jpg|none|thumb|Button PCB, bottom view]]
[[File:Canon PowerShot A3100 IS sd card front.jpg|none|thumb|SD card PCB, top view]]
[[File:Canon PowerShot A3100 IS sd back.jpg|none|thumb|SD card PCB, bottom view]]
[[File:Canon PowerShot A3100 IS ccd front.jpg|none|thumb|CCD sensor, top view]]
[[File:Canon PowerShot A3100 IS ccd sensor back.jpg|none|thumb|CCD sensor and lens assembly, bottom view]]

== Parts Identification ==
The parts are grouped based on (guessed) functional blocks.

=== CPU/DSP ===
Canon '''DIGIC III''' 

* Main SoC
* Marking CK4-1127 E142C2 Z55

Samsung '''K8P6415UQB''' 4Mx16 NOR Flash Memory, 16 MB

Elpida '''D51321DBH-6ETS-F''' 16Mx32 DDR333 Mobile RAM, 64 MB

'''351-9K3''' 8-pin package RTC? (near 32k crystal)

=== CCD Driver ===
Analog Devices '''DI9004''' (also found in Sanyo VPC-S1415)

* Marking: BBCZ #1008 1808576.1
* CCD frontend w/ ADC and     likely also timing generator

=== Audio/Video ===
Sanyo '''LA74310LP''' Audio Interface and Video Driver

* Marking A74310 0PX0

=== Lens/Image Stabilization ===
LG (Renesas?) '''R2J30507''' 01110B optical image stabilization driver

* Similar IC in Sony W120,     Canon PowerShot G9

2x Murata '''ENC-03''' series, angular rate sensors (SE501/SE502)

* Probably 1x ENC-03RC-R and 1x     ENC-03RD-R
* Similar to Sony W120, Canon     PowerShot G9

=== Power ===
Maxim '''8680CE''' TL005 7 Channel DC-DC Power Management IC

=== Flash ===
TI '''TPS65560''' Flash charger and IGBT driver

* Chip marking: BPR TI 01 A2DI
* Also in Sony W55 and W120

Renesas '''RJP4002ASA''' IGBT
[[File:Canon PowerShot A3100 IS debug connector.jpg|thumb|Unpopulated connector, likely with JTAG and UART]]

== Hacking ==
Unpopulated connector located on back of board

* Candidate for JTAG and debug UART
* Pin-out likely same as documented [https://web.archive.org/web/20200302085303/https://nada-labs.net/2014/finding-jtag-on-a-canon-elph100hs-ixus115/ here].
<syntaxhighlight lang="c">
  TX  -  _  RX
 GND  -  _  3.3V
SHDN  -  _  N/C
 N/C  -  _  HALF_BAUD
  PD  -  _  ALT_BOOT
  PD  -  _  /TRST
 TDI  -  _  TMS
 TCK  -  _  TDO
/OFF  
</syntaxhighlight><br />