Epson S5U1C17801T1100 - Manual (Page 31)

9 CONNECTION CIRCUIT TO EXTERNAL MEMORY
S5U1C17801T1100 HARDWARE MANUAL EPSON 25
(SOFTWARE EVALUATION TOOL FOR S1C17801)
9 Connection Circuit to External Memory
SRAM, NOR Flash, NAND Flash, and EEPROM are connected to the SVT17801 as external memory modules.
SRAM Connection Circuit
CYPRESS 16M bits SRAM (CY62167DV30) is installed on the SVT17801. The following diagram shows how the
EEPROM is connected to the SVT17801.
V DD
V
DD
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15/A-20
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
CY62167DV30
S1C17801
NC
DNU
V CC
29
31
33
35
38
40
42
44
30
32
34
36
39
41
43
45
V SS
V
SS
CE1
RD
WRL
WRH/RSH
A0/BSL
25
24
23
22
21
20
19
18
8
7
6
5
4
3
2
1
48
17
16
9
A1 to A20
D0 to D15
CE2
CE1
OE
WE
BHE
BLE
BYTE
10
13
12
26
28
11
14
15
37
47
R11
10K
C11
0.1µF
46
27
R20
10K
R19
10K
R15
10K
R73
10K
Fig. 9.1.1 SRAM Connection Circuit