参数资料
型号: MMA6556KW
厂商: Freescale Semiconductor
文件页数: 21/53页
文件大小: 0K
描述: IC ACCELEROMETER X AXIS 16QFN
标准包装: 75
轴: X
加速范围: ±120g
灵敏度: 16 LSB/g
电源电压: 3.13 V ~ 5.25 V
输出类型: SPI
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-EP(6x6)
3.3
Voltage Regulators
Separate internal voltage regulators supply the analog and digital circuitry. External filter capacitors are required, as shown in
Figure 1 . The voltage regulator module includes voltage monitoring circuitry which indicates a device reset until the external sup-
ply and all internal regulated voltages are within predetermined limits. A reference generator provides a stable voltage which is
used by the ΣΔ converters.
V CC
BANDGAP
REFERENCE
VOLTAGE
REGULATOR
BIAS
GENERATOR
V REGA = 2.50 V
PRIMARY
OSCILLATOR
V REGA
TRIM
REFERENCE
GENERATOR
V REF = 1.250 V
TRACKING
TRIM
ΣΔ
CONVERTER
DIGITAL
LOGIC
DSP
OTP
ARRAY
V CC
V REG
REGULATOR
Tracks V REGA
Figure 8. Power Supply Block Diagram
V CCUV
V REGOV
V REGUV
V REG = 2.50 V
V REG
MONITOR
BANDGAP
V BGMON
V REGA
V REGAUV
GROUND LOSS
MONITOR
SET DEVRES Flag
V REGAOV
V REF
V REFOV
V REG
V PORREF
POR
V REFUV
Note: No external access to reference voltage
Limits verified by characterization only
Figure 9. Voltage Monitoring
MMA655x
Sensor
Freescale Semiconductor, Inc.
21
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