ADUC836 Analog Devices, ADUC836 Datasheet - Page 10

• Manufacturer Part Number: ADUC836
• Description: Precision Analog Microcontroller: 1MIPS 8052 MCU + 62kB Flash + Dual 16-Bit ADC + 12-Bit DAC
• Manufacturer: Analog Devices

Specifications of ADUC836

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

Pin No. Pin No.
52-Lead 56-Lead
MQFP
3–4,
9–12
ADuC836
1, 2
CSP
56, 1
2–3,
11–14
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 ADuC836 OVER THE ADuC816
200A
43
Mnemonic
P1.0/P1.1
P1.0/T2/PWM0
P1.1/T2EX/PWM1 I/O
P1.2–P1.7
P1.2/DAC/IEXC1 I/O
P1.3/AIN5/IEXC2 I/O
SENSOR
5
TEMP
CURRENT
44
SOURCE
MUX
6
MUX
MUX
45
AIN
AIN
46
20
200A
REFERENCE
34
49
BAND GAP
DETECT
48
V
50
AUXILIARY ADC
BUF
REF
47
51
- ADC
16-BIT
POR
21 35
52
Type* Description
I/O
I/O
I
PGA
1
15
2
P1.0 and P1.1 can function as digital inputs or digital outputs and have a pull-up
configuration as described for Port 3. P1.0 and P1.1 have an increased current drive
sink capability of 10 mA.
P1.0 and P1.1 also have various secondary functions as described below. P1.0 can 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 PWM1
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.
Port 1.2 to Port 1.7 have no digital output driver; they can function as a digital input
for which 0 must be written to the port bit. As a digital input, these pins must be
driven high or low externally. These pins also have the following analog functionality:
The voltage output from the DAC or one or both current sources (200 µA or
2  200 µA) can be configured to appear at this pin.
Auxiliary ADC input or one or both current sources can be configured at this pin.
Figure 1. Detailed Block Diagram
PIN FUNCTION DESCRIPTIONS
11-BIT STACK POINTER
62 KBYTES PROGRAM/
SERIAL PORT
2  DATA POINTERS
3
PRIMARY ADC
ADuC836
4 KBYTES DATA
UART
16
- ADC
4
ADC CONTROL
CALIBRATION
16-BIT
FLASH/EE
FLASH/EE
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/
- DAC
VOLTAGE
16-BIT
16-BIT
DUAL
DUAL
13
PWM
12-BIT
18
19
COUNTER
22
TIMERS
16-BIT
23
32
BUF
24
OSC
MUX
33
25
22
23
18
19
1
3
2
1
2
DAC
PWM0
PWM1
T0
T1
T2
T2EX
INT0
INT1
REV. A