參數(shù)資料
型號(hào)： M50FLW040AK5P
廠商： 意法半導(dǎo)體
英文描述： 4-Mbit (5 】 64 Kbyte blocks + 3 】 16 】 4 Kbyte sectors) 3-V supply Firmware Hub / low-pin count Flash memory
中文描述： 4兆位（5】64字節(jié)塊3】16】4 Kbyte的）3 - V電源供電固件集線器/低引腳數(shù)的閃存
文件頁(yè)數(shù)： 23/64頁(yè)
文件大?。?/td> 338K
代理商： M50FLW040AK5P
M50FLW040A, M50FLW040B
Bus operations
23/64
Table 7.
Figure 7.
FWH bus write waveforms
FWH bus write field definitions
Clock
Cycle
Number
Clock
Cycle
Count
FieldFWH3
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
M50FLW040AK5TG 4-Mbit (5 】 64 Kbyte blocks + 3 】 16 】 4 Kbyte sectors) 3-V supply Firmware Hub / low-pin count Flash memory
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M50FLW040AK5T 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
M50FLW040AK5TG 功能描述:閃存 SERIAL FLASH RoHS:否 制造商:ON Semiconductor 數(shù)據(jù)總線寬度:1 bit 存儲(chǔ)類(lèi)型:Flash 存儲(chǔ)容量:2 MB 結(jié)構(gòu):256 K x 8 定時(shí)類(lèi)型: 接口類(lèi)型:SPI 訪問(wèn)時(shí)間: 電源電壓-最大:3.6 V 電源電壓-最小:2.3 V 最大工作電流:15 mA 工作溫度:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel
M50FLW040AK5TP 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:4-Mbit (5 】 64 Kbyte blocks + 3 】 16 】 4 Kbyte sectors) 3-V supply Firmware Hub / low-pin count Flash memory
M50FLW040AN1 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
M50FLW040AN1G 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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