Datasheet

ADuC7033
Rev. B | Page 16 of 140
NC = NO CONNECT
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
ADuC7033
TOP VIEW
(Not to Scale)
1
2
3
4
5
6
7
8
9
10
11
12
RESET
GPIO_5/IRQ1/RxD
GPIO_6/TxD
GPIO_7/IRQ4
GPIO_8/IRQ5
TCK
TDI
DGND
NC
TDO
NTRST
TMS
13 14 15 16 17 18 19 20 21 22 23 24
VBAT
VREF
GND_SW
NC NC
VTEMP
IIN+
IIN–
AGND AGND
NC
REG_AVDD
48 47 46 45 44 43 42 41 40 39 38 37
LIN/BSD IO_VSS STI NC VSS NC VDD WU NC NC NC XTAL2
36
35
34
33
32
31
30
29
28
27
26
25
XTAL1
DGND
DGND
REG_DVDD
NC
GPIO_4/ECLK
GPIO_3/MOSI
GPIO_2/MISO
GPIO_1/SCLK
GPIO_0/IRQ0/SS
NC
NC
06847-007
Figure 7. Pin Configuration
Table 7. Pin Function Descriptions
Pin No. Mnemonic Type
1
Description
1
RESET
I
Reset Input Pin. Active low. This pin has an internal, weak, pull-up resistor to REG_DVDD. When
not in use, this pin remains unconnected. For added security and robustness, it is
recommended that this pin be strapped via a resistor to REG_DVDD.
2 GPIO_5/IRQ1/RxD I/O
General-Purpose Digital Input/Output 5, External Interrupt Request 1, or Receive Data. This is a
multifunction pin. By default and after power-on-reset, this pin configures as an input. The pin
has an internal weak pull-up resistor. This pin remains unconnected when not in use. This
multifunction pin can be configured in one of three states, namely
General-Purpose Digital I/O 5.
External Interrupt Request 1, active high.
Receive data for UART serial port.
3 GPIO_6/TxD I/O
General-Purpose Digital Input/Output 6, Transmit Data. This is a multifunction pin. By default
and after power-on-reset, this pin configures as an input. The pin has an internal weak pull-up
resistor. This pin remains unconnected when not in use. This multifunction pin can be
configured in one of two states, namely
General-Purpose Digital I/O 6.
Transmit data for UART serial port.
4 GPIO_7/IRQ4 I/O
General-Purpose Digital Input/Output 7, External Interrupt Request 4. This is a multifunction
pin. By default and after power-on-reset, this pin configures as an input. The pin has an internal
weak pull-up resistor. This pin remains unconnected when not in use. This multifunction pin
can be configured in one of two states, namely
General-Purpose Digital I/O 7.
External Interrupt Request 4, active high.
5 GPIO_8/IRQ5 I/O
General-Purpose Digital Input/Output 8, External Interrupt Request 5. This is a multifunction
pin. By default and after power-on-reset, this pin configures as an input. The pin has an internal
weak pull-up resistor. This pin remains unconnected when not in use. This multifunction pin
can be configured in one of two states, namely
General-Purpose Digital I/O 8.
External Interrupt Request 5, active high.
6 TCK I
JTAG Test Clock. This clock input pin is one of the standard 5-pin JTAG debug ports on the part.
TCK is an input pin only and has an internal weak pull-up resistor. This pin remains
unconnected when not in use.