21 ELECTRICAL CHARACTERISTICS
21-6
Seiko Epson Corporation
S1C17M20/M21/M22/M23/M24/M25
TECHNICAL MANUAL (Rev. 1.0)
OSC1 internal oscillation frequency-temperature characteristic
Typ. value
-50
40
35
30
25
20
-25
0
25
50
75
100
Ta [
°
C]
f
OSC1I
[k
Hz
]
OSC3 oscillator circuit characteristics
Unless otherwise specified: V
DD
= 1.8 to 5.5 V, V
SS
= 0 V, Ta = 25
°
C
Item
Symbol
Condition
Ta
Min.
Typ.
Max.
Unit
Internal oscillator
oscillation start time
t
sta3I
CLGOSC3.OSC3MD bit = 0
–
–
3
µs
Internal oscillator
oscillation frequency
f
OSC3I
CLGOSC3.OSC3MD bit = 0,
CLGOSC3.OSC3FQ[1:0] bits = 0x2
25
°
C
18.00
20
22.00
MHz
-40 to 85
°
C
17.40
20
22.60
MHz
CLGOSC3.OSC3MD bit = 0,
CLGOSC3.OSC3FQ[1:0] bits = 0x1
25
°
C
15.20
16
16.8
MHz
-40 to 85
°
C
14.88
16
17.12
MHz
CLGOSC3.OSC3MD bit = 0,
CLGOSC3.OSC3FQ[1:0] bits = 0x0
10 to 40
°
C
11.88
12
12.12
MHz
-10 to 60
°
C
11.76
12
12.24
MHz
-40 to 85
°
C
11.70
12
12.30
MHz
Crystal/ceramic oscillator
oscillation start time
*
1
t
sta3C
CLGOSC3.OSC3MD bit = 1,
CLGOSC3.OSC3INV[1:0] bits = 0x0
–
–
10
ms
Crystal/ceramic oscillator
internal gate capacitance
C
GI3C
CLGOSC3.OSC3MD bit = 1
–
8
–
pF
Crystal/ceramic oscillator
internal drain capacitance
C
DI3C
CLGOSC3.OSC3MD bit = 1
–
8
–
pF
Crystal/ceramic oscillator
circuit current - oscillation
inverter drivability ratio
I
OSC3C
CLGOSC3.OSC3MD bit = 1,
CLGOSC3.OSC3INV[1:0] bits = 0x0
–
50
–
%
CLGOSC3.OSC3MD bit = 1,
CLGOSC3.OSC3INV[1:0] bits = 0x1 (reference)
–
100
–
%
CLGOSC3.OSC3MD bit = 1,
CLGOSC3.OSC3INV[1:0] bits = 0x2
–
120
–
%
CLGOSC3.OSC3MD bit = 1,
CLGOSC3.OSC3INV[1:0] bits = 0x3
–
190
–
%
*
2 Ceramic resonator = CSBLA_J (manufactured by Murata Manufacturing Co., Ltd., 1 MHz), C
G3
= C
D3
= 100 pF
OSC3 internal oscillation frequency-temperature characteristic
Typ. value
-50
25
20
15
10
5
0
-25
0
25
50
75
100
Ta [
°
C]
f
OSC3I
[M
Hz
]
20MHz
12 MHz
16 MHz