参数资料
| 型号： | ATAM893T-TKQ |
| 厂商： | Atmel |
| 文件页数： | 84/98页 |
| 文件大小： | 0K |
| 描述： | IC MON TIRE-PRESS ATARX9X SER |
| 标准包装： | 4,000 |
| 系列： | MARC4 |
| 核心处理器： | MARC4 |
| 芯体尺寸： | 4-位 |
| 速度： | 4MHz |
| 连通性： | SSI（2 线，3 线） |
| 外围设备： | 欠压检测/复位，POR，PWM，WDT |
| 输入/输出数： | 16 |
| 程序存储器容量： | 4KB（4K x 8） |
| 程序存储器类型： | EEPROM |
| EEPROM 大小： | 64 x 16 |
| RAM 容量： | 256 x 4 |
| 电压 - 电源 (Vcc/Vdd)： | 1.8 V ~ 6.5 V |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 20-SOIC（0.209"，5.30mm 宽） |
| 包装： | 带卷 (TR) |
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85
4680C–4BMCU–01/05
ATAM893-D
6.1
Serial Interface
The EEPROM uses an MCL-like two-wire serial interface to the microcontroller for read and
write accesses to the data. It is considered to be a slave in all these applications. That means,
the controller has to be the master that initiates the data transfer and provides the clock for
transmit and receive operations.
The serial interface is controlled by the microcontroller which generates the serial clock and con-
trols the access via the SCL-line and SDA-line. SCL is used to clock the data into and out of the
device. SDA is a bi-directional line that is used to transfer data into and out of the device. The
following protocol is used for the data transfers.
6.1.1
Serial Protocol
Data states on the SDA-line changing only while SCL is low
Changes on the SDA-line while SCL is high are interpreted as START or STOP condition
A START condition is defined as a high to low transition on the SDA-line while the SCL-line is
high
A STOP condition is defined as a low to high transition on the SDA-line while the SCL-line is
high
Each data transfer must be initialized with a START condition and terminated with a STOP
condition. The START condition wakes the device from standby mode and the STOP
condition returns the device to standby mode.
A receiving device generates an acknowledge (A) after the reception of each byte. This
requires an additional clock pulse, generated by the master. If the reception was successful
the receiving master or slave device pulls down the SDA-line during that clock cycle. If an
acknowledge is not detected (N) by the interface in transmit mode, it will terminate further
data transmissions and go into receive mode. A master device must finish its read operation
by a non-acknowledge and then send a stop condition to bring the device into a known state.
Figure 6-2.
MCL Protocol
Before the START condition and after the STOP condition the device is in standby mode and
the SDA line is switched as input with pull-up resistor.
The control byte that follows the START condition determines the following operation. It
consists of the 5-bit row address, 2 mode control bits and the READ/NWRITE bit that is used
to control the direction of the following transfer. A 0 defines a write access and a 1 a read
access.
Start
condition
Data
valid
Data
change
Data/
acknowledge
valid
Stop
condition
SCL
SDA
Stand-by
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ATAM893T-TKQYD | 功能描述:4位微控制器 - MCU Marc4 micrium 4 k FLASH RoHS:否 最大时钟频率:32 KHz/4 MHz 程序存储器大小:4 KB 封装 / 箱体:SSO-20 制造商:Atmel 核心:MARC4 数据总线宽度:4 bit 安装风格:SMD/SMT |
| ATAM893T-TKS | 功能描述:IC MON TIRE-PRESS ATARX9X SER RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:MARC4 标准包装:1,500 系列:AVR® ATtiny 核心处理器:AVR 芯体尺寸:8-位 速度:16MHz 连通性:I²C，LIN，SPI，UART/USART，USI 外围设备:欠压检测/复位，POR，PWM，温度传感器，WDT 输入/输出数:16 程序存储器容量:8KB（4K x 16） 程序存储器类型:闪存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 11x10b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 包装:带卷 (TR) |
| ATAM893T-TKSYD | 功能描述:4位微控制器 - MCU Marc4 micrium 4k FLASH RoHS:否 最大时钟频率:32 KHz/4 MHz 程序存储器大小:4 KB 封装 / 箱体:SSO-20 制造商:Atmel 核心:MARC4 数据总线宽度:4 bit 安装风格:SMD/SMT |
| ATAM893X-TKHYZ | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Flash Version for ATAR080, ATAR090/890 and ATAR092/892 |
| ATAM893X-TKQYZ | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Flash Version for ATAR080, ATAR090/890 and ATAR092/892 |
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