Datasheet

REV. B
ADuC824
–21–
PROG.
CLOCK
DIVIDER
WATCHDOG
TIMER
2568
USER RAM
POWER SUPPLY
MONITOR
AIN3
AIN4
AIN5
AIN1
AIN2
REFIN
REFIN
IEXC2
IEXC1
AIN
MUX
TEMP
SENSOR
AIN
MUX
BANDGAP
REFERENCE
V
REF
DETECT
CURRENT
SOURCE
MUX
200A 200A
5
AV
DD
6
AGND
20
DV
DD
34
DV
DD
48
DV
DD
21
DGND
35
DGND
47
DGND
15
RESET
26
SCLK
27
SDATA/MOSI
14
MISO
13
SS
32
XTAL1
BUF
ADuC824
AUXILIARY ADC
16-BIT
- ADC
ADC CONTROL
AND
CALIBRATION
PGA
PRIMARY ADC
24-BIT
- ADC
ADC CONTROL
AND
CALIBRATION
3
22
T0
23
T1
2
T2EX
T2
1
18
INT0
19
INT1
DAC
40
EA
41
PSEN
17
TXD
16
RXD
6408
DATA
FLASH/EE
8K8
PROGRAM
FLASH/EE
ASYNCHRONOUS
SERIAL PORT
(UART)
8052
MCU
CORE
DOWNLOADER
DEBUGGER
42
ALE
DAC
CONTROL
BUF
SINGLE-PIN
EMULATOR
SYNCHRONOUS
SERIAL INTERFACE
(SPI OR I
2
C)
16-BIT
COUNTER
TIMERS
TIME
INTERVAL
COUNTER
XTAL2
33
OSC
AND
PLL
43
P0.0 (AD0)
44
P0.1 (AD1)
45
P0.2 (AD2)
46
P0.3 (AD3)
49
P0.4 (AD4)
50
P0.5 (AD5)
51
P0.6 (AD6)
52
P0.7 (AD7)
1
P1.0 (T2)
2
P1.1 (T2EX)
3
P1.2 (DAC/IEXC1)
4 9
P1.4 (AIN1)
10
P1.5 (AIN2)
11
P1.6 (AIN3)
12
P1.7 (AIN4/DAC)
28
P2.0 (A8/A16)
29
P2.1 (A9/A17)
30
P2.2 (A10/A18)
31
P2.3 (A11/A19)
36
P2.4 (A12/A20)
37
P2.5 (A13/A21)
38
P2.6 (A14/A22)
39
P2.7 (A15/A23)
16
P3.0 (RXD)
17
P3.1 (TXD)
18
P3.2 (INT0)
19
P3.3 (INT1)
22
P3.4 (T0)
23
P3.5 (T1)
24
P3.6 (WR)
25
P3.7 (RD)
12-BIT
VOLTAGE
OUTPUT DAC
P1.3 (AIN5/IEXC2)
Figure 12. Block Diagram