参数资料
型号: MC13892JVLR2
厂商: Freescale Semiconductor
文件页数: 51/158页
文件大小: 0K
描述: IC PMU I.MX51/37/35/27 186MAPBGA
标准包装: 1,000
应用: 电池管理,显示器(LED 驱动器),手持/移动设备,电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 186-LFBGA
供应商设备封装: 186-PBGA(12x12)
包装: 带卷 (TR)
FUNCTIONAL DEVICE OPERATION
CLOCK GENERATION AND REAL TIME CLOCK
Figure 10. SRTC block diagram
VSRTC
The VSRTC regulator provides the CLK32KMCU output level. It is also used to bias the Low-power SRTC domain of the SRTC
module integrated on certain FSL processors. The VSRTC regulator is enabled as soon as the RTCPORB is detected. The
VSRTC cannot be disabled.
Table 17. VSRTC Specifications
Parameter
Condition
Min
Typ
Max
Units
General
Operating Input Voltage Range,
V INMIN to V INMAX
Operating Current Load Range IL MIN
to IL MAX
Bypass Capacitor Value
Valid Coin Cell range or valid BP
1.8
UVDET
0.0
1.0
3.6
4.65
50
V
V
μ A
μ F
Active Mode - DC
Output Voltage V OUT
V INMIN < V IN < V INMAX
IL MIN < IL < IL MAX
1.150
1.20
1.25
V
REAL TIME CLOCK
A real Time Clock (RTC) function is provided including time and day counters as well as an alarm function. The utilizes a
32 kHz clock, either the RC oscillator or the 32.768 kHz crystal oscillator as a time base, and is powered by the coin cell backup
supply when BP has dropped below operational range. In configurations where the SRTC is used, the RTC can be disabled to
conserve current drain by setting the RTCDIS bit to a 1 (defaults on at power up).
TIME AND DAY COUNTERS
The 32 kHz clock is divided down to a 1.0 Hz time tick which drives a 17-bit Time Of Day (TOD) counter. The TOD counter
counts the seconds during a 24 hour period from 0 to 86,399, and will then roll over to 0. When the roll over occurs, it increments
the 15-bit DAY counter. The DAY counter can count up to 32767 days. The 1.0 Hz time tick can be used to generate a 1HZI
interrupt if unmasked.
MC13892
Analog Integrated Circuit Device Data
Freescale Semiconductor
51
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