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參數(shù)資料
| 型號： | M50FLW040AN5G |
| 廠商： | 意法半導體 |
| 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 |
| 文件頁數(shù)： | 24/64頁 |
| 文件大?。?/td> | 338K |
| 代理商： | M50FLW040AN5G |
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Bus operations
M50FLW040A, M50FLW040B
24/64
Table 8.
Figure 8.
LPC bus read waveforms (1-byte)
LPC bus read field definitions (1-byte)
Clock
Cycle
Number
Clock
Cycle
Count
Field
LAD0-
LAD3
Memory
I/O
Description
1
1
START
0000b
I
On the rising edge of CLK with LFRAME Low,
the contents of LAD0-LAD3 must be 0000b to
indicate the start of a LPC cycle.
2
1
CYCTYPE
+ DIR
0100b
I
Indicates the type of cycle and selects 1-byte
reading. Bits 3:2 must be 01b. Bit 1 indicates
the direction of transfer: 0b for read. Bit 0 is
Don’t Care.
3-10
8
ADDR
XXXX
I
A 32-bit address is transferred, with the most
significant nibble first. A23-A31 must be set to
1. A22=1 for memory access, and A22=0 for
register access.
Table 5
shows the appropriate
values for A21-A19.
11
1
TAR
1111b
I
The host drives LAD0-LAD3 to 1111b to
indicate a turnaround cycle.
12
1
TAR
1111b
(float)
O
The LPC Flash Memory takes control of
LAD0-LAD3 during this cycle.
13-14
2
WSYNC
0101b
O
The LPC Flash Memory drives LAD0-LAD3 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 LPC Flash Memory drives LAD0-LAD3 to
0000b, indicating that data will be available
during the next clock cycle.
16-17
2
DATA
XXXX
O
Data transfer is two CLK cycles, starting with
the least significant nibble.
18
1
TAR
1111b
O
The LPC Flash Memory drives LAD0-LAD3 to
1111b to indicate a turnaround cycle.
19
1
TAR
1111b
(float)
N/A
The LPC Flash Memory floats its outputs, the
host takes control of LAD0-LAD3.
AI04429
CLK
LFRAME
LAD0-LAD3
Number of
clock cycles
START
CYCTYPE
+ DIR
ADDR
TAR
SYNC
DATA
TAR
1
1
8
2
3
2
2
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M50FLW040AN5P | 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 |
| M50FLW040AN5T | 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 |
| M50FLW040AN5TG | 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 |
| M50FLW040AN5TP | 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 |
| M50FLW040ANB1 | 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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