参数资料
| 型号： | AS8002-AQFP |
| 厂商： | ams |
| 文件页数： | 3/25页 |
| 文件大小： | 0K |
| 描述： | IC CURRENT MEASURE SOLAR 16VQFN |
| 标准包装： | 1 |
| 类型： | 电源管理 |
| 输入类型： | 模拟 |
| 输出类型： | 数字 |
| 接口： | SPI 串行 |
| 电流 - 电源： | 5mA |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-VQFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN（4x4） |
| 包装： | 标准包装 |
| 其它名称： | AS8002-AQFPDKR |
www.austriamicrosystems.com/AS8002
Revision 1.1
10 - 24
AS8002
Data Sheet - D e t a i l e d D e s c r i p t i o n
7.1 Operating Modes
When the supply voltage is below the threshold VPOR, the AS8002 is in Reset mode. Once the supply voltage is higher than VPOR, the AS8002
goes into Off mode during its initialization time tINIT. In this mode, the current consumption is reduced and only the Control register can be read
or written. Once the register bit chip_en has been set to 1, the chip goes into On mode and can be normally used after tWAKEUP. The chip can
go immediately back to Off mode by setting chip_en to 0.
7.2 SPI Interface
The 16-bit SPI interface enables read / write access to the register blocks and is compatible to a standard micro controller interface, using SPI
Mode 3 (SCLK initial state = high, data latched with rising edge of SCLK).
The SPI module is active as soon as pin SCSB is pulled low. The AS8002 is then ready to read the 8-bit SPI address on the SDI input with every
rising edge of SCLK and writes on its SDO output with the falling edge of SCLK. After 16 clock cycles SCSB has to be set back to high status in
order to reset the interface for the next read/write cycle.
The address is split into an upper 7 bit address (addr[0…6]) and a lower 8
th bit (R/W) containing the read/write information.
Writing data to the AS8002 is established by setting the R/W bit to 0. The 8 bits following this bit on SDI contain the data to be written into the
address specified in the first 8 bits.
Reading data is established by setting the R/W bit to 1. The 8 bits following this bit on SDO contain the data from the address specified in the first
8 bits on SDI.
7.3 SPI Interface Data Transfer Protocol
Figure 4. Write Mode
Table 5. Characteristics
Parameter
Description
Min
Max
Unit
VPOR
POR threshold voltage
2.6
V
tINIT
Initialization time
3
ms
tWAKEUP
Wake up time
300
s
65
0
1
2
3
46
5
0
1
2
3
4
7
65
0
1
2
3
4
7
65
0
1
2
3
4
addr[6:0]
read_meas_MSB[7:0]
R/W
data[7:0]
read_meas_LSB[7:0]
SCSB
SCLK
SDI
SDO
ams
AG
Technical
content
still
valid
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