at91m42800 ATMEL Corporation, at91m42800 Datasheet - Page 6

• Manufacturer Part Number: at91m42800
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

Table 3. AT91M42800 Pin Description (Continued)
6
Module
JTAG/ICE
Emulation
Power
Name
JTAGSEL
TMS
TDI
TDO
TCK
NTRST
NTRI
VDDIO
VDDCORE
VDDPLL
GND
AT91M42800
Function
JTAG/ ICE selection
Test Mode Select
Test Data In
Test Data Out
Test Clock
Test Reset Input
Tri-state Mode Enable
I/O Power
Core Power
PLL Power
Ground
Ground
Output
Power
Power
Power
Type
Input
Input
Input
Input
Input
Input
Active
Level
Low
Low
–
–
–
–
–
–
–
–
Comments
High enables IEEE 1149.1
JTAG boundary scan
Low enables ARM Standard
ICE debug
Schmitt trigger
Schmitt trigger, internal pull-up
Schmitt trigger, internal pull-up
Schmitt trigger, internal pull-up
Schmitt trigger, internal pull-up
Sampled during reset
3V or 5V nominal supply
2V or 3V nominal supply
3V nominal supply