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參數(shù)資料
| 型號： | ADUC842BCP62-5 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU |
| 中文描述： | 8-BIT, FLASH, 16.78 MHz, MICROCONTROLLER, QCC56 |
| 封裝： | 8 X 8 MM, LEAD FRAME, MO-220VLLD2, CSP-56 |
| 文件頁數(shù)： | 52/88頁 |
| 文件大小： | 903K |
| 代理商： | ADUC842BCP62-5 |
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ADuC841/ADuC842/ADuC843
POWER SUPPLY MONITOR
As its name suggests, the power supply monitor, once enabled,
monitors the DV
DD
supply on the ADuC841/ADuC842/
ADuC843. It indicates when any of the supply pins drops below
one of two user selectable voltage trip points, 2.93 V and 3.08 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 interrupts the core using the PSMI bit in the
PSMCON SFR. This bit is not 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 condition, and
also ensures that normal code execution does not resume until a
safe supply level has been well established. The supply monitor
Rev. 0 | Page 52 of 88
is also protected against spurious glitches triggering the
interrupt circuit.
Note that the 5 V part has an internal POR trip level of 4.5 V,
which means that there are no usable PSM levels on the 5 V
part. The 3 V part has a POR trip level of 2.45 V, allowing all
PSM trip points to be used.
PSMCON
SFR Address
Power-On Default
Bit Addressable
Power Supply Monitor
Control Register
DFH
DEH
No
Table 22. PSMCON SFR Bit Designations
Bit No.
Name
7
----
6
CMPD
Description
Reserved.
DV
DD
Comparator Bit.
This is a read-only bit that directly reflects the state of the DV
DD
comparator.
Read 1 indicates that the DV
DD
supply is above its selected trip point.
Read 0 indicates that the DV
DD
supply is below its selected trip point.
Power Supply Monitor Interrupt Bit.
This bit is set high by the MicroConverter if either CMPA or CMPD is 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 comparator output is low, it is not possible for the user to clear PSMI.
DV
DD
Trip Point Selection Bits.
These bits select the DV
DD
trip point voltage as follows:
TPD1
TPD0
Selected DV
DD
Trip Point (V)
0
0
Reserved
0
1
3.08
1
0
2.93
1
1
Reserved
Reserved.
Reserved.
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.
5
PSMI
4
3
TPD1
TPD0
2
1
0
----
----
PSMEN
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相關(guān)代理商/技術(shù)參數(shù) |
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| ADUC842BCP8-3 | 制造商:Analog Devices 功能描述: 制造商:Rochester Electronics LLC 功能描述: |
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| ADUC842BCPZ32-3 | 功能描述:IC MCU 32K 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/復(fù)位，LED，POR，PWM，WDT 輸入/輸出數(shù):16 程序存儲器容量:4KB（4K x 8） 程序存儲器類型: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 |
| ADUC842BCPZ32-5 | 功能描述:IC MCU 32K 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/復(fù)位，LED，POR，PWM，WDT 輸入/輸出數(shù):16 程序存儲器容量:4KB（4K x 8） 程序存儲器類型: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 |
| ADUC842BCPZ62-3 | 功能描述:IC ADC/DAC 12BIT W/MCU 56-LFCSP 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/復(fù)位，LED，POR，PWM，WDT 輸入/輸出數(shù):16 程序存儲器容量:4KB（4K x 8） 程序存儲器類型: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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