Datasheet
Data Sheet ADuC845/ADuC847/ADuC848
Rev. C | Page 17 of 108
WATCHDOG
TIMER
2304 BYTES
USER RAM
POWER SUPPLY
MONITOR
200A200A
BAND GAP
REFERENCE
V
REF
DETECT
AV
DD
AGND
DV
DD
RESET
POR
MOSI
MISO
SS
XTAL1
ADuC847
ADC
CONTROL
AND
CALIBRATION
DAC
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
UART
SERIAL PORT
CURRENT
SOURCE
MIX
SINGLE-
CYCLE
8052
MCU
CORE
DOWNLOADER
DEBUGGER
SPI SERIAL
INTERFACE
16-BIT
COUNTER
TIMERS
WAKE-UP/
RTC TIMER
PLL WITH PROG.
CLOCK DIVIDER
XTAL2
OSC
2 DATA POINTERS
11-BIT STACK POINTER
AIN
MUX
AIN1
AIN2
MUX
PWM0
PWM1
PWM
CONTROL
UART
TIMER
SCLK
SCLK
SDATA
I
2
C SERIAL
INTERFACE
04741-070
PGA
BUF
BUF
56
4 36 51 23
DGND
37 38 50 1817 19 44 43 45 30 31 32 33 28 29 34 35
21
20
39
33
25
24
41
PWMCL
K
42
40
14
5 6 22
1
AIN3
2
AIN4
3
AIN5
9
AIN6
10
AIN7
11
AIN8
12
P0.0 (AD0)
P0.1 (AD1)
46 47
P0.2 (AD2)
48
P0.3 (AD3)
49
P0.4 (AD4)
52
P0.5 (AD5)
53
P0.6 (AD6)
54
P0.7 (AD7)
55
P3.0 (RxD)
P3.1 (TxD)
18 19
P3.2 (INT0)
20
P3.3 (INT1)
21
P3.4 (T0)
24
P3.5 (T1)
25
P3.6 (WR)
26
P3.7 (RD)
27
P1.0/AIN1
P1.1/AIN2
56 1
P1.2/AIN3/REFIN2+
2
P1.3/AIN4/REFIN2–
3
P1.4/AIN5
9
P1.5/AIN6
10
P1.6/AIN7/IEXC1
11
P1.7/AIN8/IEXC2
12
P2.0/SCLK (A8/A16)
P2.1/MOSI (A9/A17)
30 31
P2.2/MISO (A10/A18)
32
P2.3/SS/T2 (A11/A19)
33
P2.4/T2EX (A12/A20)
39
P2.5/PWM0 (A13/A21)
40
P2.6/PWM1 (A14/A22)
41
P2.7/PWMCLK (A15/A23)
42
AIN9
15
AIN10
16
A
INCOM/DA
C
13
DUAL
16-BIT
- DAC
DUAL
16-BIT
PWM
REFIN+
8
REFIN–
7
IEXC1
11
IEXC2
12
PRIMARY ADC
24-BIT
- ADC
NOTES
1. THE PIN NUMBERS REFER TO THE LFCSP PACKAGE ONLY.
Figure 5. Detailed Block Diagram of the ADuC847