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Table 3-6. EEPROM PIOs Signal Descriptions
PIO
Mnemonic
Shared
Signal Description
PC6
TWD1
XPRO
TWI Data
PC7
TWCL1
XPRO
TWI Clock
The figure below illustrates the implementation for the EEPROM.
Figure 3-20. EEPROM 24AA02E48
TWD1
TWCK1
GND_POWER
VDD_3V3
GND_POWER
TWD1_PC6
TWCK1_PC7
C118
100nF
C0402
R188
10K
R0402
U15
24AA02E48
8MA2
A0
1
A1
2
A2
3
GND
4
SDA
5
SCL
6
WP
7
VCC
8
3.2.9
Secure Digital Multimedia Card (SDMMC) Interface
The SD (Secure Digital) Card is a non-volatile memory card format used as a mass storage memory in
mobile devices.
3.2.9.1
Secure Digital Multimedia Card (SDMMC) Controller
The SAMA5D2-PTC-EK board has two Secure Digital Multimedia Card (SDMMC) interfaces that support
the MultiMedia Card (e.MMC) Specification V4.41, the SD Memory Card Specification V3.0, and the
SDIO V3.0 specification. It is compliant with the SD Host Controller Standard V3.0 Specification.
•
The SDMMC0 interface is connected to a standard SD card interface.
•
The SDMMC1 interface is connected to a microSD card interface.
3.2.9.2
SDMMC0 Card Connector
A standard MMC/SD card connector, connected to SDMMC0, is mounted on the top side of the board.
The SDMMC0 communication is based on a 12-pin interface (clock, command, data (8) and power lines
(2)). A card detection switch is included.
The figure below illustrates the implementation for the SDMMC0 interface.
Figure 3-21. SDMMC0 Standard SD Socket
(MCI0_CD)
(MCI0_WP)
(MCI0_DA1)
(MCI0_DA0)
(MCI0_CK)
(MCI0_CDA)
(MCI0_DA3)
(MCI0_DA2)
(MCI0_DA4)
(MCI0_DA5)
(MCI0_DA7)
(MCI0_DA6)
GND_POWER
GND_POWER
VDDSDHC
VDD_3V3
SDMMC0_CK_PA0
SDMMC0_CMD_PA1
SDMMC0_DAT1_PA3
SDMMC0_DAT2_PA4
SDMMC0_DAT3_PA5
SDMMC0_DAT4_PA6
SDMMC0_DAT5_PA7
SDMMC0_DAT6_PA8
SDMMC0_DAT7_PA9
SDMMC0_WP_PA12
SDMMC0_CD_PA13
SDMMC0_DAT0_PA2
R154
0R
R0402
R169
10k
R0402
R167
68k
R0603
R173
10k
R0402
C110 10uF
C0603
R161
68k
R0603
R155
68k
R0603
R163
68k
R0603
J6
7SDMM-B0-2211
con_kingconn_7sdmm_2211
8
5
7
6
4
3
2
1
9
14
15
16
13
12
11
10
R165
68k
R0603
R171
0R
R0402
R157
68k
R0603
R172
10k
R0402
C111 100nF
C0402
R158
68k
R0603
R159
68k
R0603
SAMA5D2-PTC-EK
Board Components
©
2017 Microchip Technology Inc.
DS50002709A-page 21