Chip Erase Header; Other Headers; Peripherals; Sram - Atmel SAM4E Xplained Pro User Manual

Pin on EXT4
45 [IRQ2]
46 [PWM]
47 [RESET]
48 [VCC]
49 [VCC]
50 [GND]
4.1.3

Chip Erase Header

There is a 1x2 pin-header that is connected to the SAM4E chip erase pin (PB12) and 3V3 marked ERASE as
shown in Figure 1-1, "SAM4E Xplained Pro Evaluation Kit Overview" on page
chip erase the SAM4E by place a jumper on the header and toggle the power to the board. After the power is
toggled the jumper should be removed. Using the chip erase jumper is the only way to erase a chip with the
security bit set, an application that immediatly sets invalid clock options or goes into deep sleep withouth any
wake-up sources.
4.1.4

Other Headers

In addition to the Xplained Pro standard connectors, SAM4E Xplained Pro has one header with spare signals
that offers access to the I/O of the microcontroller which are otherwise not easily available elsewhere or might
be favourable to have collected toghether. The headers has a pitch of 2.54mm.
Table 4-5. EBI Spare Signal Header
Pin on header
1
2
3
4
5
6
7
8
9
10
11
12
13
14
4.2

Peripherals

4.2.1

SRAM

The SAM4E Xplained Pro features two external ISSI IS61WV5128BLL-10TLI, 512Kx8, 10ns, SRAMs, SRAM0
and SRAM1. SRAM0 is connected to chip select NCS1 and SRAM1 is connected to chip select NCS3. SRAM
access can be configured in the Static Memory Controller in the SAM4E.
Table 4-6, "SRAM Connections" on page 14
Table 4-6. SRAM Connections
Pin on SAM4E
PC0
SAM4E pin
PE4
PD27
PE0
-
-
-
SAM4E pin Function
PC0 Data line 0
PC1 Data line 1
PC2 Data line 2
PC3 Data line 3
PC4 Data line 4
PC5 Data line 5
PC6 Data line 6
PC7 Data line 7
PA23 CS
PE3 DISPLAY ENABLE
PC11 RE
PC8 WE
- GND
- VCC
lists all I/O-lines connected to the SRAMs.
Function SRAM function
D0 Data line 0
Function Shared functionality
IRQ2 IRQ1 and EDBG DGI
PWML3 EDBG DGI
GPIO
VCC_P3V3
VCC_P3V3
GND
4. This header can be used to
Shared functionality
SRAM, NAND and LCD connector
SRAM, NAND and LCD connector
SRAM, NAND and LCD connector
SRAM, NAND and LCD connector
SRAM, NAND and LCD connector
SRAM, NAND and LCD connector
SRAM, NAND and LCD connector
SRAM, NAND and LCD connector
LCD connector
EDBG DGI and LCD connector
SRAM and LCD connector
SRAM and LCD connector
Shared functionality
NAND, LCD connector and EBI spare
header
Atmel SAM4E Xplained Pro [USER GUIDE] 14
42216A-MCU-01/2014