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参数资料
| 型号： | AT30TSE002B-MAH-T |
| 厂商： | Atmel |
| 文件页数： | 10/36页 |
| 文件大小： | 1184K |
| 描述： | SENSOR DGTL TEMP I2C/SMBUS 8WDFN |
| 标准包装： | 5,000 |
| 系列： | * |
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10
Atmel AT30TSE002B [DATASHEET]
8711GSEEPR5/12
7.
Device Addressing
AT30TSE002B device requires an 8-bit device address word following a start condition to enable the chip to access
either the Temperature Sensor or EEPROM functions (See Table 7-1).
Table 7-1. Control/Device Address Word
Note: 1. X = User Selectable
The EEPROM device address word consists of a mandatory one-zero sequence for the first four most significant bits
(1010) for normal read and write operations, a 0110 for writing to the EEPROM write protect register and 0011 for
Temperature Sensor operations. The next three bits are the A2, A1 and A0 device address bits for the AT30TSE002B
device. These three bits must match their corresponding hard-wired input pins. The eighth bit of the device address is the
read/write operation select bit. A read operation is initiated if this bit is high and an EEPROM write operation is selected if
this bit is low. Upon a compare of the device address, the device will output a zero, called an Acknowledge (ACK). If a
compare is not made, the chip will not ACK and will return to a standby state. The EEPROM will not ACK if the write
protect register has been programmed and the control code is 0110.
8.
EEPROM Write Operations
Byte Write: A write operation requires an 8-bit data word address following the device address word and ACK. Upon
receipt of this address, the EEPROM will again respond with an ACK and then clock in the first 8-bit data word. Following
receipt of the 8-bit data word, the EEPROM will output an ACK and the addressing device, such as a microcontroller,
must terminate the write sequence with a stop condition. At this time the EEPROM enters an internally timed write cycle,
t
WR
, to the nonvolatile memory. All inputs are disabled during this write cycle and the EEPROM will not respond until the
write is complete (see Figure 13-2 and Figure 13-3).
The device will acknowledge a write command, but not write the data, if the software write protection has been enabled.
The write cycle time must be observed even when the write protection is enabled.
Page Write: The 2K EEPROM device is capable of 16-byte page write. A page write is initiated the same as a byte write,
but the microcontroller does not send a stop condition after the first data word is clocked in. Instead, after the EEPROM
acknowledges receipt of the first data word, the microcontroller can transmit up to fifteen more data words. The EEPROM
will respond with a zero after each data word received. The microcontroller must terminate the page write sequence with
a stop condition (see Figure 13-3). The data word address lower four bits are internally incremented following the receipt
of each data word. The higher data word address bits are not incremented, retaining the memory page row location.
When the word address, internally generated, reaches the page boundary, the following byte is placed at the beginning
of the same page. If more than sixteen data words are transmitted to the EEPROM, the data word address will roll over
and previous data will be overwritten. The address roll over during write is from the last byte of the current page to the
first byte of the same page. The device will acknowledge a write command, but not write the data, if the software write
protection has been enabled. The write cycle time must be observed even when the write protection is enabled.
Acknowledge (ACK) Polling: Once the internally-timed write cycle has started and the EEPROM inputs are disabled,
ACK polling can be initiated. This involves sending a start condition followed by the device address word. The read/write
bit is representative of the operation desired. Only if the internal write cycle has completed will the EEPROM respond
with a zero allowing the read or write sequence to continue.
Device
Control / Device Address Word
Device ID
Device Address Bits
R/W
B7
B6
B5
B4
A2
A1
A0
B0
EEPROM
1
0
1
0
X
X
X
X
Temperature Sensor
0
0
1
1
EEPROM Write Protection
0
1
1
0
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT30TSE004A-MA5M-T | 制造商:Atmel Corporation 功能描述:1-CH TMPSNSR, 4K SPD EE, I2C, 1.7V-3.6V - 1MHZ, EXTENDED TEM - Tape and Reel 制造商:Adesto Technologies Corporation 功能描述: 制造商:Atmel Corporation 功能描述:SENSOR DGTL TEMP I2C/SMBUS 8UDFN 制造商:Atmel Corporation 功能描述:1-ch TmpSnsr, 4K SPD EE, I2C, 1.7V-3.6V - 1MHz, Extended Temp, 8-UDFN |
| AT30TSE004A-MAA5AK-T | 功能描述:1.7-3.6V, 1MHZ, EXT TMP, 8-WDFN 制造商:atmel 系列:- 包装:剪切带（CT） 零件状态:停产 传感器类型:数字，本地 检测温度 - 本地:-20°C ~ 125°C 检测温度 - 远程:- 输出类型:I2C 电压 - 电源:1.7 V ~ 3.6 V 分辨率:11 b 特性:可编程极限，可选择滞后，关断模式，待机模式 精度 - 最高（最低）:±1°C（±3°C） 测试条件:75°C ~ 95°C（-20°C ~ 125°C） 工作温度:-20°C ~ 125°C 封装/外壳:8-WFDFN 裸露焊盘 供应商器件封装:8-WDFN（2x3） 标准包装:1 |
| AT30TSE004A-MAA5M-T | 制造商:Atmel Corporation 功能描述:TMP SENSOR EEP RWP 512X8 1.7-3.6V 8UDFN NG - Tape and Reel 制造商:Atmel Corporation 功能描述:TMP SENSOR EEP RWP 512X8 1.7-3.6V 8UDFN NG - Cut TR (SOS) 制造商:Adesto Technologies Corporation 功能描述: 制造商:Atmel Corporation 功能描述:SENSOR DGTL TEMP I2C/SMBUS 8WDFN 制造商:Atmel Corporation 功能描述:Board Mount Temperature Sensors 1-ch TmpSnsr 4K SPEE I2C 1.7V-3.6V-1MHz 制造商:Atmel Corporation 功能描述:1-ch TmpSnsr, 4K SPD EE, I2C, 1.7V-3.6V - 1MHz, Extended Temp, 8-WDFN |
| AT30TSE004-MA5M-T | 制造商:Atmel Corporation 功能描述:SERIAL ANALOG, TEMP SENSOR - 8 制造商:Atmel Corporation 功能描述:SERIAL ANALOG, TEMP SENSOR - 8 UDFN,TMP SENSOR,PB/HALOFREE,N - Tape and Reel |
| AT30TSE004-MAA5M-T | 制造商:Atmel Corporation 功能描述:SERIAL ANALOG, TEMP SENSOR - 8 制造商:Atmel Corporation 功能描述:SERIAL ANALOG, TEMP SENSOR - 8 WDFN,TMP SENSOR,PB/HALOFREE,N - Tape and Reel |
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