AT91SAM7S256_0410 Datasheet, PDF (6/32 Pages) ATMEL Corporation – AT91 ARM Thumb-based Microcontrollers

Table 1. Signal Description List (Continued)
Signal Name
Function
Type
Active
Level
Two-Wire Interface
TWD
Two-wire Serial Data
I/O
TWCK
Two-wire Serial Clock
I/O
Analog-to-Digital Converter
AD0-AD3
Analog Inputs
Analog
AD4-AD7
Analog Inputs
Analog
ADTRG
ADC Trigger
Input
ADVREF
ADC Reference
Analog
Fast Flash Programming Interface
PGMEN0-PGMEN1 Programming Enabling
Input
PGMM0-PGMM3
Programming Mode
Input
PGMD0-PGMD15
Programming Data
I/O
PGMRDY
Programming Ready
Output
High
PGMNVALID
Data Direction
Output
Low
PGMNOE
Programming Read
Input
Low
PGMCK
Programming Clock
Input
PGMNCMD
Programming Command
Input
Low
Comments
Digital pulled-up inputs at reset
Analog Inputs
6 _{AT91SAM7S256 Summary Preliminary}
6117AS–ATARM–20-Oct-04