Bios
IC has a ROM to save EC Bios firmware for SIO/EC microcontroler
management.This work like a computer inside the IC's. SIO managed all
signal,stepping sleep state,thermocontroler ,protecting error etc.(get
the detil info download the Datasheet)
Even whole component onboard ok and power well will stop working if EC Bios Firmware damage .
To check Firmware ok ,there is a signal tes confirmation on EC/SIO pin name RSMRST# .This pin must available 3.3V(tolerance 10%) than Bios Confirmed OK.
Check the power need also Bios IC and SIO need 3.3V powered VCC for working well.
Even whole component onboard ok and power well will stop working if EC Bios Firmware damage .
To check Firmware ok ,there is a signal tes confirmation on EC/SIO pin name RSMRST# .This pin must available 3.3V(tolerance 10%) than Bios Confirmed OK.
Check the power need also Bios IC and SIO need 3.3V powered VCC for working well.
Serial Flashmemories provide a storage solution for systems with limited space, pins and power. The 25X series offers flexibility and performance well
beyond ordinary Serial Flash devices. They are ideal for code download
applications as well as storing voice, text and data. The devices
operate on a single 2.7V to
3.6V power supply with current consumption as low as 5mA active and 1μA for power-down.
All devices are offered in space-saving packages.
The W25X10A/20A/40A/80A array is organized into 512/1024/2048/4096 programmable pages of
256-bytes each. Up to 256 bytes can be programmed at a time using the Page Program instruction.
Pages can be erased in groups of 16 (sector erase), groups of 256 (block erase) or the entire chip (chip erase). Erasable sectors and 2/4/8/16 erasable
blocks respectively. The small 4KB sectors allow for greater flexibility in applications that require data and parameter storage.
Supports the standard Serial Peripheral Interface (SPI), and a high
performance dual output SPI using four pins: Serial Clock, Chip Select, Serial Data I/O and Serial Data Out. SPI clock frequencies of up to 100MHz are supported allowing equivalent clock rates of 200MHz when using the Fast Read Dual Output instruction. These transfer rates are comparable to
those of 8 and 16-bit Parallel Flash memories.
3.6V power supply with current consumption as low as 5mA active and 1μA for power-down.
All devices are offered in space-saving packages.
The W25X10A/20A/40A/80A array is organized into 512/1024/2048/4096 programmable pages of
256-bytes each. Up to 256 bytes can be programmed at a time using the Page Program instruction.
Pages can be erased in groups of 16 (sector erase), groups of 256 (block erase) or the entire chip (chip erase). Erasable sectors and 2/4/8/16 erasable
blocks respectively. The small 4KB sectors allow for greater flexibility in applications that require data and parameter storage.
Supports the standard Serial Peripheral Interface (SPI), and a high
performance dual output SPI using four pins: Serial Clock, Chip Select, Serial Data I/O and Serial Data Out. SPI clock frequencies of up to 100MHz are supported allowing equivalent clock rates of 200MHz when using the Fast Read Dual Output instruction. These transfer rates are comparable to
those of 8 and 16-bit Parallel Flash memories.
Modern motherboards of Laptop have 3 kind of Bios
1, Main Bios bios is that we usually find in general the motherboard to control the basic input output system on SB/NB/VGA
Instrumental in setting chipsets (ICH-PCH-SB-NB) ... Bios Bug can cause the chipset can not function properly.This firmware managed all chip interface communication.
2. EC Bios (embedded controller bios). EC firmware bios related to the main bios and save settings for embedded controller chip .This firmware managed all power signal management include GPIO/SM_BUS/Keyboard controller including sistem switching signal,password security controller (see datasheet for more detil EC Fiture)
3.ID Bios which only store data to determine information about motherboard ID.
1, Main Bios bios is that we usually find in general the motherboard to control the basic input output system on SB/NB/VGA
Instrumental in setting chipsets (ICH-PCH-SB-NB) ... Bios Bug can cause the chipset can not function properly.This firmware managed all chip interface communication.
2. EC Bios (embedded controller bios). EC firmware bios related to the main bios and save settings for embedded controller chip .This firmware managed all power signal management include GPIO/SM_BUS/Keyboard controller including sistem switching signal,password security controller (see datasheet for more detil EC Fiture)
3.ID Bios which only store data to determine information about motherboard ID.
