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参数资料
| 型号： | M25P16-VMN6TG |
| 厂商： | 意法半导体 |
| 元件分类： | DRAM |
| 英文描述： | 4 Mbit Uniform Sector, Serial Flash Memory |
| 中文描述： | 4兆位统一部门，串行闪存 |
| 文件页数： | 10/55页 |
| 文件大小： | 335K |
| 代理商： | M25P16-VMN6TG |
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SPI modes
M25P16
10/55
3
SPI modes
These devices can be driven by a microcontroller with its SPI peripheral running in either of
the two following modes:
CPOL=0, CPHA=0
CPOL=1, CPHA=1
●
●
For these two modes, input data is latched in on the rising edge of Serial Clock (C), and
output data is available from the falling edge of Serial Clock (C).
The difference between the two modes, as shown in
Figure 5
, is the clock polarity when the
bus master is in Stand-by mode and not transferring data:
C remains at 0 for (CPOL=0, CPHA=0)
C remains at 1 for (CPOL=1, CPHA=1)
●
●
Figure 4.
Bus master and memory devices on the SPI bus
1.
Figure 4
shows an example of three devices connected to an MCU, on an SPI bus. Only one
device is selected at a time, so only one device drives the Serial Data Output (Q) line at a
time, the other devices are high impedance. Resistors R (represented in
Figure 4
) ensure
that the M25P16 is not selected if the Bus Master leaves the S line in the high impedance
state. As the Bus Master may enter a state where all inputs/outputs are in high impedance
at the same time (for example, when the Bus Master is reset), the clock line (C) must be
connected to an external pull-down resistor so that, when all inputs/outputs become high
impedance, the S line is pulled High while the C line is pulled Low (thus ensuring that S and
C do not become High at the same time, and so, that the t
SHCH
requirement is met). The
typical value of R is 100 k
, assuming that the time constant R*C
p
(C
p
= parasitic
capacitance of the bus line) is shorter than the time during which the Bus Master leaves the
SPI bus in high impedance.
The Write Protect (W) and Hold (HOLD) signals should be driven, High or Low as appropriate.
AI12836b
SPI Bus Master
SPI Memory
Device
SDO
SDI
SCK
C
Q
D
S
SPI Memory
Device
C
Q
D
S
SPI Memory
Device
C
Q
D
S
CS3
CS2 CS1
SPI Interface with
(CPOL, CPHA) =
(0, 0) or (1, 1)
W
HOLD
W
HOLD
W
HOLD
R
R
R
V
CC
V
CC
V
CC
V
CC
V
SS
V
SS
V
SS
V
SS
R
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| M25P16-VMP3TP | 4 Mbit Uniform Sector, Serial Flash Memory |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M25P16VMN6TP | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:512 Kbit to 32 Mbit, Low Voltage, Serial Flash Memory With 40 MHz or 50 MHz SPI Bus Interface |
| M25P16-VMN6TP | 功能描述:闪存 16MBIT SFLASH MEM RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
| M25P16-VMN6TPBA | 制造商:Micron Technology Inc 功能描述:NOR Flash Serial-SPI 3.3V 16Mbit 2M x 8bit 15ns 8-Pin SO N T/R 制造商:Micron Technology Inc 功能描述:16 MBIT, SERIAL FLASH MEMORY, 75 MHZ SPI BUS INTERFACE - Tape and Reel 制造商:Micron Technology Inc 功能描述:16MB SPI NOR FLASH 制造商:Micron Technology Inc 功能描述:IC FLASH 16MX1 PBF SOIC 3.0V |
| M25P16-VMN6YPBA | 制造商:Micron Technology Inc 功能描述:AUTOMOTIVE - Trays 制造商:Micron Technology Inc 功能描述:IC FLASH 16MBIT 75MHZ 8SO |
| M25P16VMP3 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:512 Kbit to 32 Mbit, Low Voltage, Serial Flash Memory With 40 MHz or 50 MHz SPI Bus Interface |
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