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參數(shù)資料
| 型號： | ADUC816BCPZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 42/68頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MCU FLASH 16BIT ADC 56LFCSP |
| 標準包裝： | 1 |
| 系列： | MicroConverter® ADuC8xx |
| 核心處理器： | 8052 |
| 芯體尺寸： | 8-位 |
| 速度： | 12.58MHz |
| 連通性： | I²C，SPI，UART/USART |
| 外圍設(shè)備： | PSM，溫度傳感器，WDT |
| 輸入/輸出數(shù)： | 34 |
| 程序存儲器容量： | 8KB（8K x 8） |
| 程序存儲器類型： | 閃存 |
| EEPROM 大小： | 640 x 8 |
| RAM 容量： | 256 x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 2.7 V ~ 5.5 V |
| 數(shù)據(jù)轉(zhuǎn)換器： | A/D 7x16b; D/A 1x12b |
| 振蕩器型： | 內(nèi)部 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 56-VFQFN 裸露焊盤，CSP |
| 包裝： | 托盤 |
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REV. 0
ADuC816
–47–
Power Supply Monitor
As its name suggests, the Power Supply Monitor, once enabled,
monitors both supplies (AVDD or DVDD) on the ADuC816. 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,
AVDD 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
Power Supply Monitor Control Register
SFR Address
DFH
Power-On Default Value
DEH
Bit Addressable
No
D
P
M
CA
P
M
CI
M
S
P1
D
P
T0
D
P
T1
A
P
T0
A
P
TN
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.
6
CMPA
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.
5
PSMI
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.
4
TPD1
DVDD Trip Point Selection Bits.
3
TPD0
These bits select the DVDD trip-point voltage as follows:
TPD1
TPD0
Selected DVDD Trip Point (V)
0
4.63
0
1
3.08
1
0
2.93
1
2.63
2
TPA1
AVDD Trip Point Selection Bits.
1
TPA0
These bits select the AVDD trip-point voltage as follows:
TPA1
TPA0
Selected AVDD Trip Point (V)
0
4.63
0
1
3.08
1
0
2.93
1
2.63
0
PSMEN
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.
REV. A
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| ADUC816BCPZ-REEL | 功能描述:8052 MicroConverter? ADuC8xx Microcontroller IC 8-Bit 12.58MHz 8KB (8K x 8) FLASH 56-LFCSP (8x8) 制造商:analog devices inc. 系列:MicroConverter? ADuC8xx 包裝:帶卷（TR） 零件狀態(tài):上次購買時間 核心處理器:8052 核心尺寸:8-位 速度:12.58MHz 連接性:I2C，SPI，UART/USART 外設(shè):PSM，溫度傳感器，WDT I/O 數(shù):34 程序存儲容量:8KB（8K x 8） 程序存儲器類型:閃存 EEPROM 容量:640 x 8 RAM 容量:256 x 8 電壓 - 電源（Vcc/Vdd）:2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 7x16b；D/A 1x12b 振蕩器類型:內(nèi)部 工作溫度:-40°C ~ 85°C（TA） 封裝/外殼:56-WFQFN 裸焊盤，CSP 供應(yīng)商器件封裝:56-LFCSP (8x8) 標準包裝:1 |
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