參數(shù)資料
型號(hào)： M50FLW040BN5T
廠商： 意法半導(dǎo)體
英文描述： 4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
中文描述： 4兆位（5 × 64KB之座3 × 16 × 4KB的部門(mén)）3V電源固件集線器/低引腳數(shù)快閃記憶體
文件頁(yè)數(shù)： 15/52頁(yè)
文件大小： 417K
代理商： M50FLW040BN5T
15/52
M50FLW040A, M50FLW040B
Table 7. FWH Bus Write Field Definitions
Figure 8. FWH Bus Write Waveforms
Clock
Cycle
Number
Clock
Cycle
Count
Field
FWH0-
FWH3
Memory
I/O
Description
1
1
START
1110b
I
On the rising edge of CLK with FWH4 Low, the contents of
FWH0-FWH3 indicate the start of a FWH Write Cycle.
2
1
IDSEL
XXXX
I
Indicates which FWH Flash Memory is selected. The value on
FWH0-FWH3 is compared to the IDSEL strapping on the FWH
Flash Memory pins to select which FWH Flash Memory is being
addressed.
3-9
7
ADDR
XXXX
I
A 28-bit address is transferred, with the most significant nibble
first. Address lines A19-21 and A23-27 are treated as Don
’
t
Care during a normal memory array access, with A22=1, but are
taken into account for a register access, with A22=0. (See
Table
15.
)
10
1
MSIZE
XXXX
I
0000(Single Byte Transfer) 0001 (Double Byte Transfer) 0010b
(Quadruple Byte Transfer).
11-18
M=2/4/8
DATA
XXXX
I
Data transfer is two cycles, starting with the least significant
nibble. (The first pair of nibbles is that at the address with A1-
A0 set to 00, the second pair with A1-A0 set to 01, the third
pair with A1-A0 set to 10, and the fourth pair with A1-A0 set
to 11. In Double Byte Program the first pair of nibbles is that at
the address with A0 set to 0, the second pair with A0 set to 1)
previous
+1
1
TAR
1111b
I
The host drives FWH0-FWH3 to 1111b to indicate a turnaround
cycle.
previous
+1
1
TAR
1111b
(float)
O
The FWH Flash Memory takes control of FWH0-FWH3 during
this cycle.
previous
+1
1
SYNC
0000b
O
The FWH Flash Memory drives FWH0-FWH3 to 0000b,
indicating it has received data or a command.
previous
+1
1
TAR
1111b
O
The FWH Flash Memory drives FWH0-FWH3 to 1111b,
indicating a turnaround cycle.
previous
+1
1
TAR
1111b
(float)
N/A
The FWH Flash Memory floats its outputs and the host takes
control of FWH0-FWH3.
AI08434B
CLK
FWH4
FWH0-FWH3
Number of
clock cycles
START
IDSEL
ADDR
MSIZE
DATA
TAR
SYNC
TAR
1
1
7
1
M
2
1
2
相關(guān)PDF資料
PDF描述
M50FLW040BN5TG 4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
M50FLW040BN5TP 4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
M50FLW040BNB1 4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
M50FLW040BNB1G 4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
M50FLW040BNB1P 4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M50FLW040BN5TG 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
M50FLW040BN5TP 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
M50FLW040BNB1 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
M50FLW040BNB1G 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
M50FLW040BNB1P 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
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