Datasheet

114
SAM7X Series [DATASHEET]
6120K–ATARM–11-Feb-14
20.2.2 Signal Names
Depending on the MODE settings, DATA is latched in different internal registers.
When MODE is equal to CMDE, then a new command (strobed on DATA[15:0] signals) is stored in the command
register.
VDDPLL PLL Power Supply Power
GND Ground 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
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] is in input mode
1: DATA[15:0] is in output mode
Output Low Pulled-up input at reset
PGMM[3:0] Specifies DATA type (See Table 20-2) Input Pulled-up input at reset
PGMD[15:0] Bi-directional data bus Input/Output Pulled-up input at reset
Table 20-1. Signal Description List (Continued)
Signal Name Function Type
Active
Level Comments
Table 20-2. Mode Coding
MODE[3:0] Symbol Data
0000 CMDE Command Register
0001 ADDR0 Address Register LSBs
0010 ADDR1
0101 DATA Data Register
Default IDLE No register
Table 20-3. Command Bit Coding
DATA[15:0] Symbol Command Executed
0x0011 READ Read Flash
0x0012 WP Write Page Flash
0x0022 WPL Write Page and Lock Flash
0x0032 EWP Erase Page and Write Page