dresden elektronik ingenieurtechnik gmbh MEGA22M00 사용자 설명서
User Manual
Version 1.1c
2013-07-01
Version 1.1c
2013-07-01
OEM
radio modules deRFmega
www.dresden-elektronik.de
Page 32 of 52
7.4.
Signal description
The available signals are described in Table 7-8. Please refer to ATmega128RFA1
datasheet [1] for more information of all dedicated signals.
datasheet [1] for more information of all dedicated signals.
Table 7-8: Signal description list
Signal name
Function
Type
Active
Level
Level
Comments
Power
VCC
Voltage Regulator Power Supply
Input
Input
Power
GND
Ground
Clocks and Oscillators
CLKI
External Clock Input
Input
CLKO
Divided System Clock Output
Output
JTAG
TCK
Test Clock
Input
No pull-up resistor
on module
on module
TDI
Test Data In
Input
No pull-up resistor
on module
on module
TDO
Test Data Out
Output
TDM
Test Mode Select
Input
No pull-up resistor
on module
on module
Serial Programming
PDI
Data Input
Input
PDO
Data Output
Output
SCK
Serial Clock
Input
Reset
RSTN
Microcontroller Reset
I/O
Low
Pull-Up resistor
5
USART
TXD0
– TXD1 Transmit Data
RXD0
– RXD1 Receive Data
XCK0
– XCK1 Serial Clock
Timer/Counter and PWM Controller
OC0A-OC3A
Output Compare and PWM Output
A for Timer/Counter 0 to 3
A for Timer/Counter 0 to 3
OC0B-OC3B
Output Compare and PWM Output
B for Timer/Counter 0 to 3
B for Timer/Counter 0 to 3
5
Internal MCU Pull-up resistor