Kurzweil K2600 Series Service Manual
7-4
CPU Board–Flash, SRAM, Expansion PRAM (2 of 8)
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
A
B
C
D
A
B
C
D
DGND
VCC
U5
1M/2MX16 FLASH ROM
14 28 42
15 29 44
37
A00
51
A01
50
A02
49
A03
48
A04
47
A05
46
A06
45
A07
43
A08
52
A09
53
A10
54
A11
2
A12
3
A13
4
A14
5
A15
13
A16
12
A17
11
A18
10
A19
9
A20
38
D00
40
D01
33
D02
31
D03
27
D04
25
D05
16
D06
18
D07
39
D08
41
D09
32
D10
30
D11
26
D12
24
D13
17
D14
19
D15
8
NC/A21
20
STATUS
56
VPP
36
BYTE
1
CE0
7
CE1
21
OE
55
PWD
22
WE
23
WP
DGND
VCC
U4
1M/2MX16 FLASH ROM
14 28 42
15 29 44
37
A00
51
A01
50
A02
49
A03
48
A04
47
A05
46
A06
45
A07
43
A08
52
A09
53
A10
54
A11
2
A12
3
A13
4
A14
5
A15
13
A16
12
A17
11
A18
10
A19
9
A20
38
D00
40
D01
33
D02
31
D03
27
D04
25
D05
16
D06
18
D07
39
D08
41
D09
32
D10
30
D11
26
D12
24
D13
17
D14
19
D15
8
NC/A21
20
STATUS
56
VPP
36
BYTE
1
CE0
7
CE1
21
OE
55
PWD
22
WE
23
WP
28 35 36-68 EVEN 71 72
DGND 1 2 11 12 19 20 27
J803
512KX16 PROG EXPAN
5
A01
6
A02
7
A03
8
A04
9
A05
10
A06
13
A07
14
A08
15
A09
16
A10
17
A11
18
A12
21
A13
22
A14
23
A15
24
A16
25
A17
26
A18
29
A19
37
D00
39
D01
41
D02
43
D03
45
D04
47
D05
49
D06
51
D07
53
D08
55
D09
57
D10
59
D11
61
D12
63
D13
65
D14
67
D15
3
VCC1
4
VCC2
69
VCC3
70
VCC4
30
CE
32
OEHI
31
OELO
34
WEHI
33
WELO
D3
S1J(1N4005)
21
D4
S1A(1N4001)
21
+
B1
3V 195mAh
12
U7
512KX8 SRAM
12
A00
11
A01
10
A02
9
A03
8
A04
7
A05
6
A06
5
A07
27
A08
26
A09
23
A10
25
A11
4
A12
28
A13
3
A14
31
A15
2
A16
30
A17/CE
1
A18
13
D00
14
D01
15
D02
17
D03
18
D04
19
D05
20
D06
21
D07
32
VCC
22
CE
24
OE
29
WE
U6
512KX8 SRAM
12
A00
11
A01
10
A02
9
A03
8
A04
7
A05
6
A06
5
A07
27
A08
26
A09
23
A10
25
A11
4
A12
28
A13
3
A14
31
A15
2
A16
30
A17/CE
1
A18
13
D00
14
D01
15
D02
17
D03
18
D04
19
D05
20
D06
21
D07
32
VCC
22
CE
24
OE
29
WE
+
C37
1000uF,10V
12
R44
1K
12
R166
3K
12
R45
1K
12
R46
1K
12
R165
3K
12
R53
1.0K
12
R52
4.7M
12
R47
2.2K
12
R50
4.7K
12
R49
2.2K
12
R48
4.7K
12
Q3
MMBT2222
B
C
E
Q2
MMBT3904
B
C
E
Q1
MMBT3904
B
C
E
R51
4.7K
12
R54
1.0M
12
C24
.1uF
12
C29
.1uF
12
C25
.1uF
12
C31
.1uF
12
C32
.1uF
12
C26
.1uF
12
C30
.1uF
12
C27
.1uF
12
C34
.1uF
12
C33
.1uF
12
C35
.1uF
12
C36
.1uF
12
YOUNG CHANG CO., LTD.
of Young Chang Co., Ltd. is prohibited.
Reproduction without the express written consent
Filename:
Doc:
Mfg:
Eng:
Sht
By:
Date:
of
Rev:
K2600 CPU BOARD
Flash, SRAM, Expansion PRAM
Mike Richmond
021206-001 RDV2
021206D2 1/5/00
28
BA[21:00] {3-A1,4-B1,5-D1,8-C8}
BD[15:00] {3-A1,5-D1,6-C8,8-A8}
+VBAT +VBAT
VCC VCC
+VBAT
BA[21]
VCC VCC
BA[20]
BA[19]
BA[18]
BA[17]
+VBAT
VCC
BA[16] BD[15]
POWEROK {8-D3}BA[15] BD[14] BA[17]
BA[14] BD[13] BA[16]
BA[13] BD[12] BA[15]
BA[12] BD[11] BA[14]
BA[11] BD[10] BA[13] BD[15]
BA[10] BD[09] BA[12] BD[14]
BA[09] BD[08] BA[11] BD[13]
BA[08] BD[07] BA[10] BD[12]
BA[07] BD[06] BA[09] BD[11]
BA[06] BD[05] BA[08] BD[10]
VCC
BA[05] BD[04] BA[07] BD[09]
BA[04] BD[03] BA[06] BD[08]
BA[03] BD[02]
+VBAT +VBAT
BA[05]
BA[02] BD[01] BA[04]
BATSENSE {8-D1}
BA[01] BD[00] BA[03]
BA[02]
BA[01]
RESET {3-D1,4-B1,5-A1,8-D8}
SRAMGATE
+VBAT
VCC
BA[19]
BA[18]
BA[17]
+VBAT
BA[16]
BA[15] BD[15]
WRITE {1-B1,3-D1,5-A1,6-C1,8-A1}
BA[14] BD[14]
BA[13] BD[13]
BA[21] BA[12] BD[12] BA[17]
BA[20]
VCC
BA[11] BD[11] BA[16]
BA[19] BA[10] BD[10] BA[15]
BA[18] BA[09] BD[09] BA[14]
BA[17] BA[08] BD[08] BA[13] BD[07]
BA[16] BD[15] BA[07] BD[07] BA[12] BD[06]
VCC VCC
BA[15] BD[14] BA[06] BD[06] BA[11] BD[05]
BA[14] BD[13] BA[05] BD[05] BA[10] BD[04]
BA[13] BD[12] BA[04] BD[04] BA[09] BD[03]
BA[12] BD[11] BA[03] BD[03] BA[08] BD[02]
BA[11] BD[10] BA[02] BD[02] BA[07] BD[01]
BA[10] BD[09] BA[01] BD[01] BA[06] BD[00]
VCC
BA[09] BD[08] BD[00] BA[05]
BA[08] BD[07] BA[04]
+VBAT
BA[07] BD[06] BA[03]
BA[06] BD[05] BA[02]
BA[05] BD[04] BA[01]
+VBAT
BA[04] BD[03]
BA[03] BD[02] SRAMGATE
BA[02] BD[01]
BA[01] BD[00]
PRAMGATE
VCC
+VBAT +VBAT
VCC
FLASH1CS {1-C1}
FLASH2CS {1-C1}
ENVRAM2 {8-A8}
DLY_RESET {8-D8}
CPUWE_HI {1-D8,3-B1,4-B1}
CPUWE_LO {1-D8}
CPUOE {1-D8,3-B1,4-B1,6-C1}
ENVRAM1 {1-D3}
SRAM_A18 {1-C1}
SRAM_A19 {1-C1}
NC
NC
Sht. 2 of 8
Eng:
Date:
Doc:
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