参数资料
型号: ADE7569ASTZF16
厂商: Analog Devices Inc
文件页数: 109/136页
文件大小: 0K
描述: IC ENERGY METER MCU 16K 64LQFP
标准包装: 1
输入阻抗: *
测量误差: *
电压 - 高输入/输出: *
电压 - 低输入/输出: *
电流 - 电源: *
电源电压: *
测量仪表类型: *
工作温度: *
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-LQFP(10x10)
包装: 托盘
Preliminary Technical Data
Table 121. Alarm Interval SFR (INTVAL, 0xA6)
ADE7566/ADE7569
Bit No.
7 to 0
Mnemonic
INTVAL
Default
0
Description
The interval timer counts according to the time base established in the ITS[1:0] bits of the RTC Configuration
SFR (TIMECON, 0xA1). Once the number of counts is equal to INTVAL, the ALARM flag is set and a
pending RTC interrupt is created. Note that the interval counter is 8-bits. Therefore, it could count up to
255 sec, for example.
Table 122. RTC Nominal Compensation SFR (RTCCOMP, 0xF6)
Bit No.
7 to 0
Mnemonic
RTCCOMP
Default
0
Description
The RTCCOMP SFR holds the nominal RTC compensation value at 25°C. This register is retained during a
watchdog reset or an external reset. It is reset after a POR.
Table 123. RTC Temperature Compensation SFR (TEMPCAL, 0xF7)
Bit No.
7 to 0
Mnemonic
TEMPCAL
Default
0
Description
The TEMPCAL SFR is adjusted based on the temperature read in the TEMPADC to calibrate the RTC over
temperature. This allows the external crystal shift to be compensated over temperature. This register is
retained during a watchdog reset or an external reset. It is reset after a POR.
Table 124. Interrupt Pins Configuration SFR (INTPR, 0xFF)
Bit No.
7
Mnemonic
RTCCAL
Default
0
Description
Controls the RTC calibration output. When set, the RTC calibration frequency selected by FSEL[1:0] is
output on the P0.2/CF1/RTCCAL pin.
6 to 5
4
FSEL[1:0]
Reserved
Sets RTC calibration output frequency and calibration window.
FSEL[1:0] Result (Calibration window, frequency)
0 0 30.5 sec, 1 Hz
0 1 30.5 sec, 512 Hz
1 0 0.244 sec, 500 Hz
1 1 0.244 sec, 16.384 kHz
3 to 1
0
INT1PRG[2:0]
INT0PRG
000
0
Controls the function of INT1.
INT1PRG[2:0]
Result
x 0
0
GPIO
x 0
1
BCTRL
0 1
x
INT1 input disabled
1 1
x
INT1 input enabled
Controls the function of INT0.
INT0PRG
Result
0
INT0 input disabled
1
INT0 input enabled
Writing to the Interrupt Pins Configuration SFR (INTPR, 0xFF)
To protect the RTC from runaway code, a key must be written to the KYREG register to obtain write access to the Interrupt Pins
Configuration SFR (INTPR, 0xFF). The KYREG should be set to 0xEA to unlock this SFR and resets to zero after a timekeeping register is
written to. The RTC registers can be written using the following 8052 assembly code:
MOV
MOV
KYREG, #0EAh
INTPR, #080h
Table 125. Key SFR (KYREG, 0xC1)
Bit No.
7 to 0
Mnemonic
KYREG
Default
0
Description
Write 0xA7 to the this SFR before writing to the POWCON SFR, which unlocks KYREG.
Write 0xEA to the this SFR before writing to the HTHSEC, SEC, MIN, or HOUR timekeeping registers to
unlock KYREG.
Rev. PrA | Page 109 of 136
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