ADuC841/ADuC842/ADuC843
Rev. 0 | Page 8 of 88
ABSOLUTE MAXIMUM RATINGS
Table 2. TA = 25°C, unless otherwise noted
Parameter
Rating
AVDD to DVDD
–0.3 V to +0.3 V
AGND to DGND
–0.3 V to +0.3 V
DVDD to DGND, AVDD to AGND
–0.3 V to +7 V
Digital Input Voltage to DGND
–0.3 V to DVDD + 0.3 V
Digital Output Voltage to DGND
–0.3 V to DVDD + 0.3 V
VREF to AGND
–0.3 V to AVDD + 0.3 V
Analog Inputs to AGND
–0.3 V to AVDD + 0.3 V
Operating Temperature Range,
Industrial
ADuC841BS,ADuC842BS,ADuC843BS
ADuC841BCP, ADuC842BCP,
ADuC843BCP
–40°C to +85°C
Storage Temperature Range
–65°C to +150°C
Junction Temperature
150°C
θJA Thermal Impedance (ADuC84xBS)
90°C/W
θJA Thermal Impedance (ADuC84xBCP)
52°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec)
Infrared (15 sec)
215°C
220°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or
any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the
human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
WATCHDOG
TIMER
256 BYTES USER
RAM
POWER SUPPLY
MONITOR
TEMP
SENSOR
BAND GAP
REFERENCE
AV
DD
AGND
DV
DD
DV
DD
DV
DD
DGND
RESET
POR
SDATA\MOSI
MISO
SS
XTAL1
ADuC841/ADuC842/ADuC843
ADC
CONTROL
AND
CALIBRATION
DAC1
DAC
CONTROL
12-BIT
VOLTAGE
OUTPUT DAC
T0
T1
T2EX
T2
INT0
INT1
EA
PSEN
ALE
SINGLE-PIN
EMULATOR
TxD
RxD
4 kBYTES DATA
FLASH/EE
62 kBYTES PROGRAM
FLASH/EE INCLUDING
USER DOWNLOAD
MODE
ASYNCHRONOUS
SERIAL PORT
(UART)
8052
MCU
CORE
DOWNLOADER
DEBUGGER
SYNCHRONOUS
SERIAL INTERFACE
(I2C AND SPI )
16-BIT
COUNTER
TIMERS
TIME INTERVAL
COUNTER
(WAKE-UP CCT)
XTAL2
OSC
2 kBYTES USER XRAM
2
× DATA POINTERS
11-BIT STACK POINTER
12-BIT
VOLTAGE
OUTPUT DAC
MUX
...
12-BIT
ADC
ADC0
ADC1
ADC6
ADC7
DAC0
MUX
16-BIT
Σ - DAC
PWM0
PWM1
16-BIT
PWM
16-BIT
PWM
CONTROL
16-BIT
Σ - DAC
T/H
CREF
BUF
UART
TIMER
SCLOCK
03260-
0
-002
PLL
Figure 2. ADuC Block Diagram (Shaded Areas are Features Not Present on the ADuC812),
No DACs on ADuC843, PLL on ADuC842/ADuC843 Only.