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| 型號(hào)： | ADUC824 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 串行ADC |
| 英文描述： | MicroConverter, Dual-Channel 16-/24-Bit ADCs with Embedded FLASH MCU |
| 中文描述： | MicroConverter的，雙通道ADC的16-/24-Bit與嵌入式閃存MCU |
| 文件頁(yè)數(shù)： | 47/68頁(yè) |
| 文件大?。?/td> | 1060K |
| 代理商： | ADUC824 |
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REV. B
ADuC824
–47–
POWER SUPPLY MONITOR
As its name suggests, the Power Supply Monitor, once enabled,
monitors both supplies (AVDD or DVDD) on the ADuC824. It
will indicate when any of the supply pins drop below one of
four user-selectable voltage trip points from 2.63 V to 4.63 V.
For correct operation of the Power Supply Monitor function,
AV
DD
must be equal to or greater than 2.7 V. Monitor function
is controlled via the PSMCON SFR. If enabled via the IEIP2
SFR, the monitor will interrupt the core using the PSMI bit in the
PSMCON SFR. This bit will not be cleared until the failing
power supply has returned above the trip point for at least
250 ms. This monitor function allows the user to save working
registers to avoid possible data loss due to the low supply condi-
tion, and also ensures that normal code execution will not
resume until a safe supply level has been well established. The
supply monitor is also protected against spurious glitches trig-
gering the interrupt circuit.
PSMCON
SFR Address
Power-On Default Value
Bit Addressable
Power Supply Monitor Control Register
DFH
DEH
No
D
P
M
C
A
P
M
C
I
M
S
P
1
D
P
T
0
D
P
T
1
A
P
T
0
A
P
T
N
E
M
S
P
Table XVIII. PSMCON SFR Bit Designations
Bit
Name
Description
7
CMPD
DVDD Comparator Bit
This is a read-only bit and directly reflects the state of the DVDD comparator.
Read ‘1’ indicates the DVDD supply is above its selected trip point.
Read ‘0’ indicates the DVDD supply is below its selected trip point.
AVDD Comparator Bit
This is a read-only bit and directly reflects the state of the AVDD comparator.
Read ‘1’ indicates the AVDD supply is above its selected trip point.
Read ‘0’ indicates the AVDD supply is below its selected trip point.
Power Supply Monitor Interrupt Bit
This bit will be set high by the MicroConverter if either CMPA or CMPD are low, indicating
low analog or digital supply. The PSMI bit can be used to interrupt the processor. Once CMPD
and/or CMPA return (and remain) high, a 250 ms counter is started. When this counter times
out, the PSMI interrupt is cleared. PSMI can also be written by the user. However, if either com-
parator output is low, it is not possible for the user to clear PSMI.
DVDD Trip Point Selection Bits
These bits select the DVDD trip-point voltage as follows:
TPD1
TPD0
Selected DVDD Trip Point (V)
0
0
4.63
0
1
3.08
1
0
2.93
1
1
2.63
AVDD Trip Point Selection Bits
These bits select the AVDD trip-point voltage as follows:
TPA1
TPA0
Selected AVDD Trip Point (V)
0
0
4.63
0
1
3.08
1
0
2.93
1
1
2.63
Power Supply Monitor Enable Bit
Set
to ‘1’ by the user to enable the Power Supply Monitor Circuit.
Cleared
to ‘0’ by the user to disable the Power Supply Monitor Circuit.
6
CMPA
5
PSMI
4
3
TPD1
TPD0
2
1
TPA1
TPA0
0
PSMEN
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| ADUC824BCP | 制造商:Analog Devices 功能描述:MCU 8-Bit ADuC8xx 8052 CISC 8KB Flash 3.3V/5V 56-Pin LFCSP EP 制造商:Rochester Electronics LLC 功能描述:8BIT CISC 8KB FLASH 12.58MHZ 3.3/5V 56LFCSP - Bulk |
| ADUC824BCP-REEL | 制造商:Analog Devices 功能描述:MCU 8-Bit ADuC8xx 8052 CISC 8KB Flash 3.3V/5V 56-Pin LFCSP EP T/R |
| ADUC824BCPZ | 功能描述:IC MCU 8K FLASH ADC/DAC 56LFCSP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 標(biāo)準(zhǔn)包裝:38 系列:Encore!® XP® 核心處理器:eZ8 芯體尺寸:8-位 速度:5MHz 連通性:IrDA，UART/USART 外圍設(shè)備:欠壓檢測(cè)/復(fù)位，LED，POR，PWM，WDT 輸入/輸出數(shù):16 程序存儲(chǔ)器容量:4KB（4K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 105°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:管件 其它名稱:269-4116Z8F0413SH005EG-ND |
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| ADUC824BS-DEN | 制造商:Analog Devices 功能描述: |
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