User Manual
GD32103E-EVAL
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4.15 EXMC-NAND Flash
Figure 15. Schematic diagram of EXMC-NAND Flash function
CL
16
AL
17
W
18
R
8
E
9
VSS2
36
VSS1
13
VDD2
37
VDD1
12
IO7
44
IO6
43
IO5
42
IO4
41
IO3
32
IO2
31
IO1
30
IO0
29
WP
19
RB
7
U11
HY27UF081G2A
EXMC_A16
EXMC_A17
EXMC_NWE
EXMC_NOE
Nand_CS
R64
10K
Ω
+3V3
R63 10K
Ω
+3V3
R66 10K
Ω
+3V3
EXMC_NWAIT
GND
+3V3
Nand Flash
EXMC_D7
EXMC_D6
EXMC_D5
EXMC_D4
EXMC_D3
EXMC_D2
EXMC_D1
EXMC_D0
C50
50V/0.1uF
C51
50V/0.1uF
+3V3
GND
4.16 Extension
Figure 16. Schematic diagram of Extension Pin
Extension Pin
PE2
PE4
PE6
PC13
PC15
PIN12
PIN14
PE3
PE5
VBAT
PC14
PIN13
PC0
PC1
PC2
PC3
PA0
PA1
PA2
PA3
PA5
PA7
PC5
PB1
PE8
PA4
PA6
PC4
PB0
PB2
PE9
PE7
PE10
PE11
PE12
PB11
PE13
PE15
PE14
PB10
GND
+3.3V
PB12
PB14
PD8
PD10
PD12
PA11
PC7
PB13
PB15
PD9
PD11
PD13
PA10
PD14
PD15
PC8
PC9
PA8
PA9
PA12
PA13
GND
PA14
PC10
PC12
PD1
PD3
PD5
PD7
PB8
PB3
PA15
PC11
PD0
PD2
PD4
BOOT0
PD6
PB4
PB5
PB6
PB7
PE1
PB9
PE0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
JP8
15×2P2.54
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
JP9
15×2P2.54
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
JP10
15×2P2.54
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
JP11
15×2P2.54
PC6
GND
GND
GND
GND
+3.3V
+3.3V
+3.3V
+3.3V