Datasheet

SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
14
Flash Memory
ERASE
Flash and NVM Configuration Bits Erase
Command
Input High VDDIO
Reset State:
- Erase Input
- Internal pull-down enabled
- Schmitt Trigger enabled
(1)
Reset/Test
NRST Synchronous Microcontroller Reset I/O Low
VDDIO
Permanent Internal
pull-up
TST Test Select Input –
Permanent Internal
pull-down
Wake-up
WKUP[15:0] Wake-up Inputs Input – VDDIO –
Universal Asynchronous Receiver Transceiver - UARTx
URXDx UART Receive Data Input – – –
UTXDx UART Transmit Data Output – – –
PIO Controller - PIOA - PIOB - PIOC
PA0–PA31 Parallel IO Controller A I/O –
VDDIO
Reset State:
- PIO or System IOs
(2)
- Internal pull-up enabled
- Schmitt Trigger enabled
(1)
PB0–PB14 Parallel IO Controller B I/O –
PC0–PC31 Parallel IO Controller C I/O –
PIO Controller - Parallel Capture Mode
PIODC0–PIODC7 Parallel Capture Mode Data Input –
VDDIO –PIODCCLK Parallel Capture Mode Clock Input –
PIODCEN1–2 Parallel Capture Mode Enable Input –
External Bus Interface
D0–D7 Data Bus I/O – – –
A0–A23 Address Bus Output – – –
NWAIT External Wait Signal Input Low – –
Static Memory Controller - SMC
NCS0–NCS3 Chip Select Lines Output Low – –
NRD Read Signal Output Low – –
NWE Write Enable Output Low – –
NAND Flash Logic
NANDOE NAND Flash Output Enable Output Low – –
NANDWE NAND Flash Write Enable Output Low – –
High Speed Multimedia Card Interface - HSMCI
MCCK Multimedia Card Clock Output – – –
MCCDA Multimedia Card Slot A Command I/O – – –
Table 3-1. Signal Description List (Continued)
Signal Name Function Type
Active
Level
Voltage
Reference Comments