21 ELECTRICAL CHARACTERISTICS
S1C17M20/M21/M22/M23/M24/M25
Seiko Epson Corporation
21-1
TECHNICAL MANUAL (Rev. 1.0)
21 Electrical Characteristics
21.1 Absolute Maximum Ratings
(V
SS
= 0 V)
Item
Symbol
Condition
Rated value
Unit
Power supply voltage
V
DD
-0.3 to 7.0
V
Flash programming voltage V
PP
-0.3 to 8.0
V
Input voltage
V
I
P00–07, P10–17, P31–37, P40–42, PD0–D1, PD3–D4
-0.3 to 7.0
V
P20–27, P30
-0.3 to V
DD
+ 0.5
V
Output voltage
V
O
P00–07, P10–17, P20–27, P30–37, P40–42, PD0–D4
-0.3 to V
DD
+ 0.5
V
High level output current
I
OH
1 pin
P00–07, P10–17, P20–27, P30–37, P40–42,
PD0–D4
-10
mA
Total of all pins
-20
mA
Low level output current
I
OL
1 pin
P00–07, P10–17, P20–27, P30–37, P40–42,
PD0–D4
10
mA
Total of all pins
20
mA
Operating temperature
Ta
-40 to 85
°
C
Storage temperature
Tstg
-65 to 125
°
C
21.2 Recommended Operating Conditions
Item
Symbol
Condition
Min.
Typ.
Max. Unit
Power supply voltage
V
DD
For normal operation
1.8
–
5.5
V
For Flash
programming
When V
PP
is supplied externally
2.4
–
5.5
V
When V
PP
is generated internally
2.7
–
5.5
V
Flash programming voltage
V
PP
7.3
7.5
7.7
V
OSC1 oscillator oscillation frequency
f
OSC1
Crystal oscillator
–
32.768
–
kHz
OSC3 oscillator oscillation frequency
f
OSC3
Crystal/ceramic oscillator
1
–
21
MHz
EXOSC external clock frequency
f
EXOSC
When supplied from an external oscillator
0.016
–
21
MHz
Bypass capacitor between V
SS
and V
DD
C
PW1
–
3.3
–
µF
Capacitor between V
SS
and V
D1
C
PW2
–
1
–
µF
Gate capacitor for OSC1 oscillator
C
G1
When the crystal oscillator is used
*
1
0
–
25
pF
Drain capacitor for OSC1 oscillator
C
D1
When the crystal oscillator is used
*
1
–
0
–
pF
Gate capacitor for OSC3 oscillator
C
G3
When the crystal/ceramic oscillator is used
*
1
0
–
100
pF
Drain capacitor for OSC3 oscillator
C
D3
When the crystal/ceramic oscillator is used
*
1
0
–
100
pF
DSIO pull-up resistor
R
DBG
*
2
–
10
–
k
W
Capacitor between V
SS
and V
PP
C
VPP
–
0.1
–
µF
Capacitor between V
SS
and V
REFA
C
VREFA
*
3
–
0.1
–
µF
*
1 The component values should be determined after performing matching evaluation of the resonator mounted on the printed
circuit board actually used.
*
2 R
DBG
is not required when using the DSIO pin as a general-purpose I/O port.
*
3 Normally, C
VREFA
is not required, as V
REFA
is supplied externally.