M50FLW040B ST Microelectronics, M50FLW040B Datasheet - Page 7

• Manufacturer Part Number: M50FLW040B
• Description: 4 Mbit 3V Supply Firmware Hub / Low Pin Count Flash Memory
• Manufacturer: ST Microelectronics

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Figure 2. Logic Diagram (FWH/LPC Interface)
Note: 1. ID3 is Reserved for Future Use (RFU) in LPC mode.
Figure 3. Logic Diagram (A/A Mux Interface)
FWH4/LFRAME
A0-A10
ID0-ID3
RC
RP
GPI0-
IC
W
GPI4
G
CLK
INIT
RP
1
11
IC
4
5
M50FLW040A
M50FLW040B
V CC
V SS
M50FLW040A
M50FLW040B
V CC
V SS
V PP
V PP
8
4
FWH0/LAD0
FWH3/LAD3
DQ0-DQ7
RB
AI08418B
TBL
WP
AI08417B
Table 1. Signal Names (FWH/LPC Interface)
Table 2. Signal Names (A/A Mux Interface)
IC
A0-A10
DQ0-DQ7
G
W
RC
RB
RP
V
V
V
NC
FWH0/LAD0-
FWH3/LAD3
FWH4/
LFRAME
ID0-ID3
GPI0-GPI4
IC
RP
INIT
CLK
TBL
WP
RFU
V
V
V
NC
CC
PP
SS
CC
PP
SS
M50FLW040A, M50FLW040B
Interface Configuration
Address Inputs
Data Inputs/Outputs
Output Enable
Write Enable
Row/Column Address Select
Ready/Busy Output
Interface Reset
Supply Voltage
Optional Supply Voltage for Fast
Program and Erase Operations
Ground
Not Connected Internally
Input/Output Communications
Input Communication Frame
Identification Inputs
General Purpose Inputs
Interface Configuration
Interface Reset
CPU Reset
Clock
Top Block Lock
Write Protect
Reserved for Future Use. Leave
disconnected
Supply Voltage
Optional Supply Voltage for Fast
Program and Erase Operations
Ground
Not Connected Internally
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