参数资料
| 型号： | 23K256-I/ST |
| 厂商： | Microchip Technology |
| 文件页数： | 13/28页 |
| 文件大小： | 0K |
| 描述： | IC SRAM 256KBIT 20MHZ 8TSSOP |
| 产品培训模块： | 23x640 and 23x256 SRAM Overview |
| 标准包装： | 100 |
| 格式 - 存储器： | RAM |
| 存储器类型： | SRAM |
| 存储容量： | 256K (32K x 8) |
| 速度： | 20MHz |
| 接口： | SPI 串行 |
| 电源电压： | 2.7 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 管件 |
| 产品目录页面： | 1442 (CN2011-ZH PDF) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页当前第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
23A256/23K256
3.0
PIN DESCRIPTIONS
3.5
Hold (HOLD)
The descriptions of the pins are listed in Table 3-1 .
The HOLD pin is used to suspend transmission to the
23X256 while in the middle of a serial sequence without
TABLE 3-1:
PIN FUNCTION TABLE
having to retransmit the entire sequence again. It must
be held high any time this function is not being used.
Name
CS
SO
V SS
SI
SCK
HOLD
V CC
PDIP/SOIC
TSSOP
1
2
4
5
6
7
8
Function
Chip Select Input
Serial Data Output
Ground
Serial Data Input
Serial Clock Input
Hold Input
Supply Voltage
Once the device is selected and a serial sequence is
underway, the HOLD pin may be pulled low to pause
further serial communication without resetting the
serial sequence. The HOLD pin must be brought low
while SCK is low, otherwise the HOLD function will not
be invoked until the next SCK high-to-low transition.
The 23X256 must remain selected during this
sequence. The SI, SCK and SO pins are in a high-
impedance state during the time the device is paused
and transitions on these pins will be ignored. To resume
serial communication, HOLD must be brought high
while the SCK pin is low, otherwise serial
3.1
Chip Select (CS)
communication will not resume. Lowering the HOLD
line at any time will tri-state the SO line.
A low level on this pin selects the device. A high level
deselects the device and forces it into Standby mode.
When the device is deselected, SO goes to the high-
impedance state, allowing multiple parts to share the
same SPI bus. After power-up, a low level on CS is
required, prior to any sequence being initiated.
Hold functionality is disabled by the STATUS register
bit.
3.2
Serial Output (SO)
The SO pin is used to transfer data out of the 23X256.
During a read cycle, data is shifted out on this pin after
the falling edge of the serial clock.
3.3
Serial Input (SI)
The SI pin is used to transfer data into the device. It
receives instructions, addresses and data. Data is
latched on the rising edge of the serial clock.
3.4
Serial Clock (SCK)
The SCK is used to synchronize the communication
between a master and the 23X256. Instructions,
addresses or data present on the SI pin are latched on
the rising edge of the clock input, while data on the SO
pin is updated after the falling edge of the clock input.
? 2008-2011 Microchip Technology Inc.
DS22100F-page 13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 23K256T-E/P | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:256K SPI Bus Low-Power Serial SRAM |
| 23K256T-E/SN | 功能描述:静态随机存取存储器 256K 32K X 8 2.7V SERIAL 静态随机存取存储器 EXT RoHS:否 制造商:Cypress Semiconductor 存储容量:16 Mbit 组织:1 M x 16 访问时间:55 ns 电源电压-最大:3.6 V 电源电压-最小:2.2 V 最大工作电流:22 uA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:TSOP-48 封装:Tray |
| 23K256T-E/ST | 功能描述:静态随机存取存储器 256K 32K X 8 2.7V SERIAL 静态随机存取存储器 EXT RoHS:否 制造商:Cypress Semiconductor 存储容量:16 Mbit 组织:1 M x 16 访问时间:55 ns 电源电压-最大:3.6 V 电源电压-最小:2.2 V 最大工作电流:22 uA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:TSOP-48 封装:Tray |
| 23K256T-I/P | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:256K SPI Bus Low-Power Serial SRAM |
| 23K256T-I/SN | 功能描述:静态随机存取存储器 256K 32K X 8 2.7V SERIAL 静态随机存取存储器 IND RoHS:否 制造商:Cypress Semiconductor 存储容量:16 Mbit 组织:1 M x 16 访问时间:55 ns 电源电压-最大:3.6 V 电源电压-最小:2.2 V 最大工作电流:22 uA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:TSOP-48 封装:Tray |
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