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参数资料
型号： ADE7569ASTZF16
厂商： Analog Devices Inc
文件页数： 68/136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
ADE7566/ADE7569
To set up background battery measurements, follow these steps:
Preliminary Technical Data
EXTERNAL VOLTAGE MEASUREMENT
1.
2.
Configure the Battery Detection Threshold SFR
(BATVTH, 0xFA) to establish a low battery threshold.
If the BATADC measurement is below this threshold,
the FBAT in the Power Management Interrupt Flag SFR
(IPSMF, 0xF8) is set.
Set up the interval for background battery measurements
The ADE7566/ADE7569 include a dedicated ADC to provide a
digital measurement of an external voltage on the V DCIN pin. An
8-bit SFR, the VDCIN ADC Value SFR (VDCINADC, 0xEF),
holds the results of the conversion. The resolution of the external
voltage measurement is TBD V/LSB. There are two ways to
initiate an external voltage conversion: a single external voltage
by configuring the BATT_PERIOD[1:0] bits in the
Peripheral ADC Strobe Period SFR (STRBPER, 0xF9).
Battery ADC in PSM0, PSM1, and PSM2
Depending on the operating mode, a battery conversion is
initiated only by certain actions.
measurement or a background external voltage measurement.
Single External Voltage Measurement
To obtain an external voltage measurement, set the
VDCIN_ADC_GO bit in the Start ADC Measurement SFR
(ADCGO, 0xD8). An interrupt is generated when the conversion
?
?
?
In PSM0 operating mode, the 8052 is active. Battery
measurements are available in the background
measurement mode and by initiating a single
measurement.
In PSM1 operating mode, the 8052 is active and the part is
battery powered. Single battery measurements can be
initiated by setting the BATT_ADC_GO bit in the Start
ADC Measurement SFR (ADCGO, 0xD8). Background
battery measurements are not available.
In PSM2 operating mode, the 8052 is not active. Battery
conversions are available through the background
measurement mode only.
is done and when the external voltage measurement is available
in the VDCIN ADC Value SFR (VDCINADC, 0xEF).
Background External Voltage Measurements
Background external voltage measurements are disabled by
default. To configure the background external voltage
measurement mode, set an external voltage measurement
interval in the Peripheral ADC Strobe Period SFR (STRBPER,
0xF9). External voltage measurements are performed
periodically in the background (see Table 45).
When an external voltage conversion is complete, the new
external voltage ADC value is compared to the last external
voltage ADC value that created an interrupt. If the absolute
Battery ADC Interrupt
The battery ADC can generate an ADC interrupt when at least
one of the following conditions occurs:
? The new battery ADC value is smaller than the value set in
the Battery Detection Threshold SFR (BATVTH, 0xFA),
difference between the two values is greater than the setting in
the VDCIN_DIFF[2:0] bits in the Temperature and Supply
Delta SFR (DIFFPROG, 0xF3), a V DCIN ADC flag is set. This
V DCIN ADC flag is the FVDCIN in the Power Management
Interrupt Flag SFR (IPSMF, 0xF8), which is used for power
supply monitoring. This V DCIN ADC flag can be enabled to
?
indicating a battery voltage loss.
A single battery measurement initiated by setting the
generate a PSM interrupt by setting the EVDCIN bit in the
Power Management Interrupt Enable SFR (IPSME, 0xEC).
BATT_ADC_GO bit finishes.
When the battery flag (FBAT) is set in the Power Management
Interrupt Flag SFR (IPSMF, 0xF8), a new ADC value is available
in the Battery ADC Value SFR (BATADC, 0xDF). This battery
flag can be enabled as a source of the PSM interrupt to generate
a PSM interrupt every time the battery drops below a set voltage
This method allows external voltage measurements to take
place completely in the background, only requiring MCU
activity if the external voltage has changed more than a
configurable delta.
To set up background external voltage measurements, follow
these steps:
threshold, or after a single conversion initiated by setting the
BATT_ADC_GO bit is ready.
The Battery ADC Value SFR (BATADC, 0xDF) is updated with
a new value only when the battery flag is set in the Power
Management Interrupt Flag SFR (IPSMF, 0xF8).
1.
2.
3.
Initiate a single external voltage measurement by setting
the VDCIN_ADC_GO bit in the Start ADC Measurement
SFR (ADCGO, 0xD8).
Upon completion of this measurement, configure the
VDCIN_DIFF[2:0] bits to establish the change in voltage
that will set the FVDCIN in the Power Management
Interrupt Flag SFR (IPSMF, 0xF8).
Set up the interval for background external voltage
measurements by configuring the VDCIN_PERIOD[1:0] bits
in the Peripheral ADC Strobe Period SFR (STRBPER,
0xF9).
Rev. PrA | Page 68 of 136
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