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參數資料
| 型號： | M95020-RDW3TP/W |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | PROM |
| 英文描述： | 256 X 8 SPI BUS SERIAL EEPROM, PDSO8 |
| 封裝： | 0.169 INCH, ROHS COMPLIANT, TSSOP-8 |
| 文件頁數： | 14/42頁 |
| 文件大小： | 250K |
| 代理商： | M95020-RDW3TP/W |
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M95040, M95020, M95010
Instructions
6.5
Read from Memory Array (READ)
As shown in Figure 11, to send this instruction to the device, Chip Select (S) is first driven
Low. The bits of the instruction byte and address byte are then shifted in, on Serial Data
Input (D). For the M95040, the most significant address bit, A8, is incorporated as bit b3 of
the instruction byte, as shown in Table 4. The address is loaded into an internal address
register, and the byte of data at that address is shifted out, on Serial Data Output (Q).
If Chip Select (S) continues to be driven Low, an internal bit-pointer is automatically
incremented at each clock cycle, and the corresponding data bit is shifted out.
When the highest address is reached, the address counter rolls over to zero, allowing the
Read cycle to be continued indefinitely. The whole memory can, therefore, be read with a
single READ instruction.
The Read cycle is terminated by driving Chip Select (S) High. The rising edge of the Chip
Select (S) signal can occur at any time during the cycle.
The first byte addressed can be any byte within any page.
The instruction is not accepted, and is not executed, if a Write cycle is currently in progress.
Figure 11.
Read from Memory Array (READ) sequence
1.
Depending on the memory size, as shown in Table 6, the most significant address bits are Don’t Care.
Table 6.
Address range bits
Device
M95040
M95020
M95010
Address Bits
A8-A0
A7-A0
A6-A0
C
D
AI01440E
S
Q
A7
2
1
3456789 10 11 12 13 14 15 16 17 18 19
A6 A5 A4 A3 A2 A1 A0
A8
20 21 22
76543
2
0
1
High Impedance
Data Out
Instruction
Byte Address
0
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| M95020-WMN3G/W | 256 X 8 SPI BUS SERIAL EEPROM, PDSO8 |
| M95256-RDW3/A | 32K X 8 SPI BUS SERIAL EEPROM, PDSO8 |
| M95256-RMN6P/A | 32K X 8 SPI BUS SERIAL EEPROM, PDSO8 |
| M95256-WDW3T/A | 32K X 8 SPI BUS SERIAL EEPROM, PDSO8 |
| M95256-RDW6TG | 32K X 8 SPI BUS SERIAL EEPROM, PDSO8 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| M95020-RDW6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4Kbit, 2Kbit and 1Kbit Serial SPI Bus EEPROM With High Speed Clock |
| M95020-RDW6/W | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4Kbit, 2Kbit and 1Kbit Serial SPI Bus EEPROM With High Speed Clock |
| M95020-RDW6G | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4Kbit, 2Kbit and 1Kbit Serial SPI Bus EEPROM With High Speed Clock |
| M95020-RDW6G/W | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4Kbit, 2Kbit and 1Kbit Serial SPI Bus EEPROM With High Speed Clock |
| M95020-RDW6P | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4Kbit, 2Kbit and 1Kbit Serial SPI Bus EEPROM With High Speed Clock |
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