Difference between revisions of "Renesas H8S/2161BV"
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The Renesas H8S/2161B is the embedded controller chip found in {{T43}} and {{T43p}} models. It controls various low-bandwidth devices such as keyboard, mouse, [[How to control fan speed|fan]], [[ibm-acpi|LEDs]], [[thermal sensors]], [[Active Protection System]] [[Analog Devices ADXL320 accelerometer|accelerometer]], [[tp_smapi#Battery_status_features|battery status]] and switches. | The Renesas H8S/2161B is the embedded controller chip found in {{T43}} and {{T43p}} models. It controls various low-bandwidth devices such as keyboard, mouse, [[How to control fan speed|fan]], [[ibm-acpi|LEDs]], [[thermal sensors]], [[Active Protection System]] [[Analog Devices ADXL320 accelerometer|accelerometer]], [[tp_smapi#Battery_status_features|battery status]] and switches. | ||
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| + | {{WARN|The Flash-RAM of the H8S/2161B is rated for just 100 guaranteed write cycles.}} | ||
== Documentation == | == Documentation == | ||
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* [http://documentation.renesas.com/eng/products/mpumcu/apn/rej05b0397_h8s2655.pdf Renesas H8S series Technical Q&A application note] | * [http://documentation.renesas.com/eng/products/mpumcu/apn/rej05b0397_h8s2655.pdf Renesas H8S series Technical Q&A application note] | ||
* A partial disassembly of the firmware running on this embedded controller is available in [http://forum.thinkpads.com/viewtopic.php?t=20958 this thread]. | * A partial disassembly of the firmware running on this embedded controller is available in [http://forum.thinkpads.com/viewtopic.php?t=20958 this thread]. | ||
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== Models containing this chip == | == Models containing this chip == | ||
Revision as of 10:45, 24 July 2006
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Contents
Renesas H8S/2161B (H8S/2140B group)
The Renesas H8S/2161B is the embedded controller chip found in T43 and T43p models. It controls various low-bandwidth devices such as keyboard, mouse, fan, LEDs, thermal sensors, Active Protection System accelerometer, battery status and switches.
ATTENTION!
The Flash-RAM of the H8S/2161B is rated for just 100 guaranteed write cycles.
Documentation
- Renesas H8S/2140B group Hardware manual
- Renesas H8S/2600 series, H8S/2000 series software manual
- Renesas H8S series Technical Q&A application note
- A partial disassembly of the firmware running on this embedded controller is available in this thread.
Models containing this chip
It is likely that all other ThinkPads with an embedded controller use the same chip.
Photos
| Photos (click to see full size) |
