1 OVERVIEW
S1C33L26 TECHNICAL MANUAL
Seiko Epson Corporation
1-13
3.2.2 List of Clock Pins
Table 1.
No.
Pin name
I/O
Description
Pin No.
PWR
DC characteristics
TQFP15
128
TQFP24
144
PFBGA
180
Input
Output
PU/PD
1 MCLKI
I High speed (OSC3) oscillation input
(crystal/ceramic resonator or external
clock input)
49
54
P8
P1
–
–
–
2 MCLKO
O High speed (OSC3) oscillation output
(crystal/ceramic resonator)
50
55
P9
P1
–
–
–
3 RTCCLKI
I RTC (OSC1) oscillation input
(crystal resonator or external clock input)
34
38
P2
P3
–
–
–
4 RTCCLKO
O RTC (OSC1) oscillation output
(crystal resonator)
35
39
P3
P3
–
–
–
3.2.3 List of External Bus Pins
Table 1.
No.
Pin name
I/O
Description
Pin No.
PWR
DC characteristics
TQFP15
128
TQFP24
144
PFBGA
180
Input
Output
PU/PD
1 D0
I/o Data bus D0
75
85
H14
P2
LVTTL
Type 2 Bus hold
latch
2 D1
I/o Data bus D1
77
87
H13
3 D2
I/o Data bus D2
78
88
H12
4 D3
I/o Data bus D3
79
89
G14
5 D4
I/o Data bus D4
80
90
G13
6 D5
I/o Data bus D5
81
91
G12
7 D6
I/o Data bus D6
83
93
F14
8 D7
I/o Data bus D7
84
94
F13
9 D8
I/o Data bus D8 (default)
85
95
F12
PC0
i/o I/O port
10 D9
I/o Data bus D9 (default)
86
96
E14
PC1
i/o I/O port
11 D10
I/o Data bus D10 (default)
87
97
E12
PC2
i/o I/O port
12 D11
I/o Data bus D11 (default)
88
98
E13
PC3
i/o I/O port
13 D12
I/o Data bus D12 (default)
89
99
D12
PC4
i/o I/O port
14 D13
I/o Data bus D13 (default)
90
100
D14
PC5
i/o I/O port
15 D14
I/o Data bus D14 (default)
92
102
D13
PC6
i/o I/O port
16 D15
I/o Data bus D15 (default)
93
103
C14
PC7
i/o I/O port
17 A0/#BSL
O
(L)
Address bus A0 / Bus strobe (low byte)
signal output
100
112
A12
P2
–
Type 2
–
18 A1/SDA0
O
(L)
Address bus A1 / SDRAM address A0
101
113
B11
19 A2/SDA1
O
(L)
Address bus A2 / SDRAM address A1
102
114
A11
20 A3/SDA2
O
(L)
Address bus A3 / SDRAM address A2
103
115
C11
21 A4/SDA3
O
(L)
Address bus A4 / SDRAM address A3
105
117
B10
22 A5/SDA4
O
(L)
Address bus A5 / SDRAM address A4
106
118
A10
23 A6/SDA5
O
(L)
Address bus A6 / SDRAM address A5
107
119
B9
24 A7/SDA6
O
(L)
Address bus A7 / SDRAM address A6
108
120
A9
25 A8/SDA7
O
(L)
Address bus A8 / SDRAM address A7
110
122
B8
26 A9/SDA8
O
(L)
Address bus A9 / SDRAM address A8
111
123
A8
27 A10/SDA9
O
(L)
Address bus A10 / SDRAM address A9
112
126
A7