22 ELECTRICAL CHARACTERISTICS
S1C31D50/D51 TECHNICAL MANUAL
Seiko Epson Corporation
22-1
(Rev. 2.00)
22 Electrical Characteristics
22.1 Absolute Maximum Ratings
(V
SS
= 0 V)
Item
Symbol
Condition
Rated value
Unit
Power supply voltage
V
DD
-0.3 to 7.0
V
QSPI-Flash interface power supply
voltage
V
DDQSPI
-0.3 to 7.0
V
Flash programming voltage
V
PP
-0.3 to 8.0
V
Input voltage
V
I
#RESET, TEST, P10–17, P40, PD2–D3
-0.3 to V
DD
+ 0.5
V
P00–07, P20–27, P30–37, P41–47, P50–57,
P60–67, P70–77, P80–87, P90–95, PA0–A6,
PD0–D1, PD4–PD5
-0.3 to 7.0
V
Output voltage
V
O
-0.3 to V
DD
+ 0.5
V
High level output current
I
OH
1 pin
-10
mA
Total of all pins
-20
mA
Low level output current
I
OL
1 pin
10
mA
Total of all pins
20
mA
Operating temperature
Ta
-40 to 85
°
C
Storage temperature
Tstg
-65 to 125
°
C
22.2 Recommended Operating Conditions
Item
Symbol
Condition
Min.
Typ.
Max. Unit
Power supply voltage
V
DD
For normal operation
1.8
–
5.5
V
V
D1
voltage mode = mode1
1.8
–
3.6
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
When generating MDC drive voltage
2.0
–
5.5
V
QSPI-Flash interface power supply
voltage
V
DDQSPI
For P90–95
and QSPI
When QSPI is used
3.0
–
3.6
V
When QSPI is not used
1.8
–
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
0.2
–
16.8 MHz
EXOSC external clock frequency
f
EXOSC
When supplied from an external oscillator
0.016
–
16.8 MHz
Bypass capacitor between V
SS
and V
DD
C
PW1
–
3.3
–
µF
Capacitor between V
SS
and V
D1
C
PW2
–
1.0
1.2
µF
Capacitor between V
SS
and V
DDQSPI
C
VDDQSPI
–
3.3
–
µF
Gate capacitor for OSC1 oscillator
C
G1
When crystal oscillator is used
*
1
0
–
25
pF
Drain capacitor for OSC1 oscillator
C
D1
When crystal oscillator is used
*
1
–
0
–
pF
Gate capacitor for OSC3 oscillator
C
G3
When crystal/ceramic oscillator is used
*
1
0
–
100
pF
Drain capacitor for OSC3 oscillator
C
D3
When crystal/ceramic oscillator is used
*
1
0
–
100
pF
Debug pin pull-up resistors
R
DBG1–2
*
2
–
100
–
k
W
Capacitor between V
SS
and V
PP
C
VPP
–
0.1
–
µF
Capacitor between V
SS
and V
REFA
C
VREFA
–
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
DBG1–2
are not required when using the debug pins as general-purpose I/O ports.