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參數(shù)資料
| 型號： | M50FLW040AK1 |
| 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）3V電源固件集線器/低引腳數(shù)快閃記憶體 |
| 文件頁數(shù)： | 14/52頁 |
| 文件大?。?/td> | 417K |
| 代理商： | M50FLW040AK1 |
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M50FLW040A, M50FLW040B
14/52
Table 6. FWH Bus Read Field Definitions
Figure 7. FWH Bus Read Waveforms
Clock
Cycle
Number
Clock
Cycle
Count
Field
FWH0-
FWH3
Memory
I/O
Description
1
1
START
1101b
I
On the rising edge of CLK with FWH4 Low, the contents of FWH0-
FWH3 indicate the start of a FWH Read 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. For the multi-byte read operation, the least significant bits
(MSIZE of them) are treated as Don
’
t Care, and the read operation
is started with each of these bits reset to 0. 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
This one clock cycle is driven by the host to determine the number
of Bytes that will be transferred. M50FLW040 supports: single
Byte transfer (0000b), 2-Byte transfer (0001b), 4-Byte transfer
(0010b), 16-Byte transfer (0100b) and 128-Byte transfer (0111b).
11
1
TAR
1111b
I
The host drives FWH0-FWH3 to 1111b to indicate a turnaround
cycle.
12
1
TAR
1111b
(float)
O
The FWH Flash Memory takes control of FWH0-FWH3 during this
cycle.
13-14
2
WSYNC
0101b
O
The FWH Flash Memory drives FWH0-FWH3 to 0101b (short
wait-sync) for two clock cycles, indicating that the data is not yet
available. Two wait-states are always included.
15
1
RSYNC
0000b
O
The FWH Flash Memory drives FWH0-FWH3 to 0000b, indicating
that data will be available during the next clock cycle.
16-17
M=2n
DATA
XXXX
O
Data transfer is two CLK cycles, starting with the least significant
nibble. If multi-Byte read operation is enabled, repeat cycle-16 and
cycle-17
n
times, where
n = 2
MSIZE
.
previous
+1
1
TAR
1111b
O
The FWH Flash Memory drives FWH0-FWH3 to 1111b to indicate
a turnaround cycle.
previous
+1
1
TAR
1111b
(float)
N/A
The FWH Flash Memory floats its outputs, the host takes control
of FWH0-FWH3.
AI08433B
CLK
FWH4
FWH0-FWH3
Number of
clock cycles
START
IDSEL
ADDR
MSIZE
TAR
SYNC
DATA
TAR
1
1
7
1
2
3
M
2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M50FLW040AN5TG | 4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory |
| M50FLW040AN5TP | 4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory |
| M50FLW040ANB1 | 4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory |
| M50FLW040ANB1G | 4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory |
| M50FLW040ANB1P | 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 |
|---|---|
| M50FLW040AK1G | 制造商:STMICROELECTRONICS 制造商全稱: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 |
| M50FLW040AK1P | 制造商:STMICROELECTRONICS 制造商全稱: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 |
| M50FLW040AK1T | 制造商:STMICROELECTRONICS 制造商全稱: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 |
| M50FLW040AK1TG | 制造商:STMICROELECTRONICS 制造商全稱: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 |
| M50FLW040AK1TP | 制造商:STMICROELECTRONICS 制造商全稱: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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