参数资料
型号: MMA5248WR2
厂商: Freescale Semiconductor
文件页数: 41/58页
文件大小: 0K
描述: IC ACCELER 480G X-AXIS 16QFN
标准包装: 1,000
轴: X
加速范围: ±480g
灵敏度: 8LSB/g,4LSB/g,2LSB/g,1LSB/g
电源电压: 4.2 V ~ 17 V
输出类型: 数字
带宽: 400Hz
接口: SPI
安装类型: 表面贴装
封装/外壳: 16-QFN 裸露焊盘
供应商设备封装: 16-QFN(6x6)
4.4.2.2
Initialization Phase 2 (8-Bit Mode)
In PSI5 initialization phase 2, 8-bit mode, the device transmits a sequence of sensor specific configuration and serial number
information. The transmission data uses a format similar to the PSI5 specification, Revision 1.3 10-Bit format modified for 8-bit
transmission. The data content and transmission format is shown in Table 11 and Table 12 . Table 11 shows the 8-bit phase 2
timing for different operating modes. Times are calculated using the equation in Section 4.4.2 .
Table 11. Initialization Phase 2 Time (8-Bit Mode)
Operating Mode
Asynchronous Mode 0 (228 μ s)
Synchronous Mode (500 μ s)
Repetition Rate (k)
16
8
# of Transmissions
576
288
Nominal Phase 2 Time
131.3 ms
144.0 ms
Table 12. PSI5 Initialization Phase 2 Data (8-Bit Mode)
PSI5 V1.2 PSI5 V1.2 Page
Field ID # Nibble ID # Address
PSI5 Half-Nibble
Address
Register Address
Description
Value
F1
F1
F2
F2
F2
F2
F3
F3
D1 H
D1 L
D2 H
D2 L
D3 H
D3 L
D4 H
D4 L
0
0
0
0
1
1
1
1
00
01
10
11
00
01
10
11
Hard-coded
Hard-coded
Hard-coded
Hard-coded
Hard-coded
Hard-coded
Hard-coded, MFG_ID[7:6]
Hard-coded, MFG_ID[5:4]
Protocol Revision = V1.3
Protocol Revision = V1.3
Number of Data Blocks = 9
Number of Data Blocks = 9
Number of Data Blocks = 9
Number of Data Blocks = 9
Manufacturer ID
Manufacturer ID
01
00
00
10
00
00
User
F3
F3
D5 H
D5 L
2
2
00
01
Hard-coded, MFG_ID[3:2]
Hard-coded, MFG_ID[1:0]
Manufacturer ID
Manufacturer ID
F4
F4
F4
F4
F5
F5
D6 H
D6 L
D7 H
D7 L
D8 H
D8 L
2
2
3
3
3
3
10
11
00
01
10
11
Hard-coded
Hard-coded
Hard-coded
Hard-coded
U_DIR[1:0] = 00: 0000
U_DIR[1:0] = 01: 0100
U_DIR[1:0] = 10: 1000
Sensor Type = Acceleration (high-g)
Sensor Type = Acceleration (high-g)
Sensor Type = Acceleration (high-g)
Sensor Type = Acceleration (high-g)
Axis
00
00
00
01
User
User
U_DIR[1:0] = 11: 1100 (not used)
F5
D9 H
4
00
±60g: 0111
Varies
F5
D9 L
4
01
±120g: 1000
±240g: 1001
Range
Varies
±480g: 1010
MMA52xxKW
Sensors
Freescale Semiconductor, Inc.
41
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