ADUC834 Analog Devices, ADUC834 Datasheet - Page 10

• Manufacturer Part Number: ADUC834
• Description: Precision Analog Microcontroller: 1MIPS 8052 MCU + 62kB Flash + 16/24-Bit ADC + 12-Bit DAC
• Manufacturer: Analog Devices

Specifications of ADUC834

• Mcu Core: 8052
• Mcu Speed (mips): 1
• Sram (bytes): 2304Bytes
• Gpio Pins: 34
• Adc # Channels: 4
• Other: PWM

ADuC834
Pin No. Pin No.
52-Lead 56-Lead
MQFP
1, 2
CSP
56, 1
REFIN
REFIN
IEXC 1
IEXC 2
AIN1
AIN2
AIN3
AIN4
AIN5
*PIN NUMBERS REFER TO THE 52-LEAD MQFP PACKAGE
SHADED AREAS REPRESENT THE NEW FEATURES OF THE ADuC834 OVER THE ADuC824
200 A
43
Mnemonic
P1.0/P1.1
P1.0/T2/PWM0
P1.1/T2EX/PWM1 I/O
SENSOR
5
TEMP
CURRENT
44
SOURCE
6
MUX
MUX
MUX
45
AIN
AIN
46
20
200 A
REFERENCE
34
49
BAND GAP
DETECT
48
V
50
AUXILIARY ADC
BUF
REF
47
51
16-BIT
POR
- ADC
21 35
52
I/O
Type* Description
I/O
PGA
1
15
2
Figure 1. Detailed Block Diagram
PIN FUNCTION DESCRIPTIONS
P1.0 and P1.1 also have various secondary functions as described below.
P1.0 and P1.1 can function as a digital inputs or digital outputs and have a
pull-up configuration as described below for Port 3. P1.0 and P1.1 have an
increased current drive sink capability of 10 mA.
P1.0 can also be used to provide a clock input to Timer 2. When enabled, counter
2 is incremented in response to a negative transition on the T2 input pin.
If the PWM is enabled, the PWM0 output will appear at this pin.
P1.1 can also be used to provide a control input to Timer 2. When enabled, a
negative transition on the T2EX input pin will cause a Timer 2 capture or reload
event. If the PWM is enabled, the PWM1 output will appear at this pin.
11-BIT STACK POINTER
62 KBYTES PROGRAM/
SERIAL PORT
2
3
PRIMARY ADC
ADuC834
4 KBYTES DATA
16
UART
DATA POINTERS
ADC CONTROL
4
CALIBRATION
FLASH/EE
24-BIT
FLASH/EE
- ADC
17
DOWNLOADER
9
AND
DEBUGGER
10
11
–10–
12
TIMER
UART
CALIBRATION
CONTROL
28
ADC
AND
29
41
30
CORE
8052
MCU
40
31
42
36
CONTROL
37
CONTROL
DAC
PWM
26
38
SPI/I
POWER SUPPLY
INTERFACE
39
WATCHDOG
2304 BYTES
USER RAM
MONITOR
2
27
C SERIAL
TIMER
16
PLL WITH PROG.
CLOCK DIVIDER
14
OUTPUT DAC
17
RTC TIMER
WAKE-UP/
VOLTAGE
16-BIT
16-BIT
DUAL
- DAC
DUAL
PWM
13
12-BIT
18
19
COUNTER
22
TIMERS
16-BIT
23
32
BUF
OSC
24
MUX
33
25
18
19
22
23
1
3
2
1
2
DAC
PWM0
PWM1
T0
T1
T2
T2EX
INT0
INT1
REV. A