Renesas H8S/2161BV
Contents
Renesas H8S/2161B (H8S/2140B group)
The Renesas H8S/2161B is the embedded controller chip found in many ThinkPad models. It controls various low-bandwidth devices such as keyboard, mouse, system fan, thermal sensors, accelerometer, intelligent Li-Ion batteries, LEDs and switches. It hosts the firmware responsible for the Active Protection System and advanced battery control.
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) |
