SAM7S256_14 Datasheet, PDF (8/775 Pages) ATMEL Corporation – ARM-based Flash MCU

Table 3-1. 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-PGMEN2 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
PGMD0-PGMD7 only on SAM7S32/16
Note: 1. Refer to Section 6. “I/O Lines Considerations” on page 14.
SAM7S Series [DATASHEET]
8
6175M–ATARM–26-Oct-12