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M50FW040K5P Datasheet(PDF) 2 Page - STMicroelectronics

Part # M50FW040K5P
Description  4-Mbit (512 Kb x8, uniform block) 3-V supply firmware hub Flash memory
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M50FW040K5P Datasheet(HTML) 2 Page - STMicroelectronics

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Contents
M50FW040
2/53
Contents
1
Summary description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2
Signal descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1
Firmware hub (FWH) signal descriptions . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1.1
Input/Output communications (FWH0-FWH3) . . . . . . . . . . . . . . . . . . . . 12
2.1.2
Input communication frame (FWH4) . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1.3
Identification inputs (ID0-ID3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1.4
General-purpose inputs (FGPI0-FGPI4) . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1.5
Interface configuration (IC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.1.6
Interface Reset (RP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.1.7
CPU Reset (INIT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.1.8
Clock (CLK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.1.9
Top Block Lock (TBL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.1.10
Write Protect (WP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.1.11
Reserved for future use (RFU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2
Address/Address multiplexed (A/A Mux) signal descriptions . . . . . . . . . . 14
2.2.1
Address inputs (A0-A10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2.2
Data Inputs/Outputs (DQ0-DQ7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2.3
Output Enable (G) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2.4
Write Enable (W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2.5
Row/Column Address Select (RC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2.6
Ready/Busy Output (RB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.3
Supply signal descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.3.1
VCC supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.3.2
VPP optional supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.3.3
VSS ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3
Bus operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.1
Firmware hub (FWH) bus operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.1.1
Bus Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.1.2
Bus Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.1.3
Bus Abort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.1.4
Standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.1.5
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18


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