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参数资料
| 型号： | ADE7569ASTZF16 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 82/136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 |
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ADE7566/ADE7569
Preliminary Technical Data
INTERRUPT FLAGS
The interrupt flags and status flags associated with the interrupt vectors are shown in Table 68 and Table 69. Most of the interrupts have
flags associated with them.
Table 68. Interrupt Flags
Interrupt Source
IE0
TF0
IE1
TF1
RI + TI
TF2 + EXF2
ITEMP (Temperature ADC)
IPSM (Power Supply)
IADE (Energy Measurement DSP)
Flags
TCON.1
TCON.5
TCON.3
TCON.7
SCON.1
SCON.0
T2CON.7
T2CON.6
–
IPSMF.6
MIRQSTL.7
Bit Address
IE0
TF0
IE1
TF1
TI
RI
TF2
EXF2
–
FPSM
–
Description
External Interrupt 0.
Timer 0.
External Interrupt 1.
Timer 1.
Transmit Interrupt.
Receive Interrupt.
Timer 2 Overflow Flag.
Timer 2 External Flag.
Temperature ADC Interrupt. Does not have an interrupt flag associated with it.
PSM Interrupt Flag.
Read MIRQSTH, MIRQSTM, MIRQSTL.
Table 69. Status Flags
Interrupt Source
ITEMP (Temperature ADC)
ISPI/I2CI
IRTC (RTC Interval Timer)
WDT (Watchdog Timer)
Flags
–
SPI2CSTAT
SPI2CSTAT
TIMECON.7
TIMECON.2
WDCON.2
Bit Address
–
–
–
–
–
WDS
Description
Temperature ADC Interrupt. Does not have a status flag associated with it.
SPI Interrupt Status Register.
I 2 C Interrupt Status Register.
RTC Midnight Flag.
RTC Alarm Flag.
Watchdog Timeout Flag.
A functional block diagram of the interrupt system is shown in
Figure 75. Note that the PSM interrupt is the only interrupt in
the highest priority level.
If an external wake-up event occurs to wake the ADE7566
/ADE7569 from PSM2, a pending external interrupt is
generated. When the EX0 or EX1 bits in the Interrupt Enable
SFR (IE, 0xA8) are set to enable external interrupts, the
program counter is loaded with the IE0 or IE1 interrupt vector.
The IE0 and IE1 interrupt flags in the TCON register are not
affected by events that occur when the 8052 MCU core is shut
down during PSM2. See the Power Supply Monitor Interrupt
(PSM) section.
The RTC, temperature ADC, and I 2 C/SPI interrupts are latched
such that pending interrupts cannot be cleared without entering
their respective interrupt service routines. Clearing the RTC
midnight flags and alarm flags does not clear a pending RTC
interrupt. Similarly, clearing the I 2 C/SPI status bits in the SPI
Interrupt Status Register SFR (SPISTAT, 0xEA) does not cancel
a pending I 2 C/SPI interrupt. These interrupts remain pending
until the RTC or I 2 C/SPI interrupt vectors are enabled. Their
respective interrupt service routines are entered shortly
thereafter.
Figure 75 shows how the interrupts are cleared when the
interrupt service routines are entered. Some interrupts with
multiple interrupt sources are not automatically cleared;
specifically the PSM, ADE, UART, and Timer 2 interrupt
vectors. Note that the INT0 and INT1 interrupts are only
cleared if the external interrupt is configured to be triggered by
a falling edge by setting IT0 in the Timer/Counter 0 and
Timer/Counter 1 Control SFR (TCON, 0x88). If INT0 or INT1
is configured to interrupt on a low level, the interrupt service
routine is reentered until the respective pin goes high.
Rev. PrA | Page 82 of 136
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