AT91SAM7S256 ATMEL Corporation, AT91SAM7S256 Datasheet - Page 4

• Manufacturer Part Number: AT91SAM7S256
• Description: AT91 ARM THUMB-BASED MICROCONTROLLERS
• Manufacturer: ATMEL Corporation

Signal Description
Table 1. Signal Description List
4
Signal Name
VDDIN
VDDOUT
VDDFLASH
VDDIO
VDDCORE
VDDPLL
GND
XIN
XOUT
PLLRC
PCK0 - PCK2
TCK
TDI
TDO
TMS
JTAGSEL
ERASE
NRST
TST
DRXD
DTXD
IRQ0 - IRQ1
FIQ
AT91SAM7S256 Summary Preliminary
Function
Voltage Regulator Power Supply Input
Voltage Regulator Output
Flash Power Supply
I/O Lines Power Supply
Core Power Supply
PLL
Ground
Main Oscillator Input
Main Oscillator Output
PLL Filter
Programmable Clock Output
Test Clock
Test Data In
Test Data Out
Test Mode Select
JTAG Selection
Flash and NVM Configuration Bits Erase
Command
Microcontroller Reset
Test Mode Select
Debug Receive Data
Debug Transmit Data
External Interrupt Inputs
Fast Interrupt Input
Clocks, Oscillators and PLLs
Flash Memory
ICE and JTAG
Debug Unit
Reset/Test
Power
AIC
Ground
Output
Output
Output
Output
Power
Power
Power
Power
Power
Power
Type
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
I/O
Active
Level
High
Low
Comments
3.0V to 3.6V
1.85V nominal
3.0V to 3.6V
3.0V to 3.6V
1.65V to 1.95V
1.65V to 1.95V
No pull-up resistor
No pull-up resistor
No pull-up resistor
Pull-down resistor
Pull-down resistor
Pull-Up resistor
Pull-down resistor
6117AS–ATARM–20-Oct-04