
125
SAM7S Series [DATASHEET]
6175M–ATARM–26-Oct-12
Notes:
1. DATA[7:0] pertains to the SAM7S32/16.
2. PGMD[7:0] pertains to the SAM7S32/16.
Table 20-1.
Signal Description List
Signal Name
Function
Type
Active
Level
Comments
Power
VDDFLASH
Flash Power Supply
Power
VDDIO
I/O Lines Power Supply
Power
VDDCORE
Core Power Supply
Power
VDDPLL
PLL Power Supply
Power
GND
Ground
Clocks
XIN
Main Clock Input.
This input can be tied to GND. In this case, the
device is clocked by the internal RC oscillator.
Input
32KHz to 50MHz
Test
TST
Test Mode Select
Input
High
Must be connected to VDDIO
PGMEN0
Test Mode Select
Input
High
Must be connected to VDDIO
PGMEN1
Test Mode Select
Input
High
Must be connected to VDDIO
PGMEN2
Test Mode Select
Input
Low
Must be connected to GND
PIO
PGMNCMD
Valid command available
Input
Low
Pulled-up input at reset
PGMRDY
0: Device is busy
1: Device is ready for a new command
Output
High
Pulled-up input at reset
PGMNOE
Output Enable (active high)
Input
Low
Pulled-up input at reset
PGMNVALID
0: DATA[15:0] or DATA[7:0]
(1) is in input mode
1: DATA[15:0] or DATA[7:0](1) is in output mode
Output
Low
Pulled-up input at reset
PGMM[3:0]
Input
Pulled-up input at reset
PGMD[15:0] or [7:0](2)
Bi-directional data bus
Input/Output
Pulled-up input at reset