SAM3A4C Atmel Corporation, SAM3A4C Datasheet - Page 397
SAM3A4C
Manufacturer Part Number
SAM3A4C
Description
Manufacturer
Atmel Corporation
- Current page: 397 of 1465
- Download datasheet (26Mb)
Notes:
24.6
24.6.1
24.7
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
1. I/O8 - I/O15 bits used only for 16-bit NAND Flash.
2. NWR1 enables upper byte writes. NWR0 enables lower byte writes.
3. CE connection depends on the Nand Flash.
Product Dependencies
Functional Description
I/O Lines
For standard Nand Flash devices, it must be connected to any free PIO line.
For “CE don’t care” 8-bit Nand Flash devices, it can be either connected to any NCS
For “CE don’t care” 16-bit Nand Flash devices, it must be connected to any free PIO line.
Table 24-3.
The pins used for interfacing the External Bus Interface may be multiplexed with the PIO lines.
The programmer must first program the PIO controller to assign the External Bus Interface pins
to their peripheral function. If I/O lines of the External Bus Interface are not used by the applica-
tion, they can be used for other purposes by the PIO Controller.
The external memory bus transfers data between the internal AHB Bus (handled by the memory
controllers) and the external memories or peripheral devices. It controls the waveforms and the
parameters of the external address, data and control busses and is composed of the following
elements:
Pin
Controller
NCS4
NCS5
NCS6
NCS7
NANDOE
NANDWE
NRD
NWR0/NWE
NWR1/NBS1
SDCK
SDCKE
RAS
CAS
SDWE
NWAIT
NANDRDY
• The Static Memory Controller (SMC)
• The Nand Flash Controller (NFC)
• The SDRAM Controller (SDRAMC)
EBI Pins and External Static Device Connections (Continued)
8-bit Static
Device
WE
WE
CS
CS
CS
CS
OE
–
–
–
–
–
–
–
–
–
Pins of the Interfaced Device
2 x 8-bit
Devices
Static
WE
WE
CS
CS
CS
CS
OE
–
–
–
–
–
–
–
–
–
(2)
(2)
SMC
Device
16-bit
Static
NUB
WE
CS
CS
CS
CS
OE
–
–
–
–
–
–
–
–
–
NAND Flash
CE
CE
CE
CE
RDY
WE
RE
–
–
–
–
–
–
–
(3)
(3)
(3)
(3)
SAM3X/A
SAM3X/A
SDR-SDRAMC
SDR-SDRAM
DQM1
CKE
RAS
CAS
CLK
WE
–
–
–
–
–
–
–
–
–
–
397
397
Related parts for SAM3A4C
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
AT91SAM ARM-based Flash MCU
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet: