![background image](http://html.mh-extra.com/html/epson/s1c31d50/s1c31d50_technical-instructions_107789440.webp)
23-1
Seiko Epson Corporation
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
23.
Electrical Characteristics
23.1.
Absolute Maximum Ratings
(V
SS
= 0 V)
Item
Symbol
Condition
Rated value
Unit
Power supply voltage
V
DD
-0.3 to 7.0
V
V
BUS
voltage
V
BUS
-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, PD3
-0.3 to V
DD
+ 0.5
V
P00
–
07, P20
–
27, P30
–
37, P40
–
47, P50
–
57, P60
–
67, P70-77,P80-87,P90-95,PA0
–
A6,PD0-D1,D4-D5
-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
23.2.
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
programmin
g
When V
PP
is supplied externally
2.4
–
5.5
V
When V
PP
is generated internally
2.7
–
5.5
V
SPI-Flash interface power supply voltage
VDDQSPI
For P9 port groups for QSPI
3.0
–
3.6
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
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/ceramic 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
*1
0
–
100
pF
Debug pin pull-up resistors
R
DBG1
–
2
*2
–
100
–
k
Ω
Capacitor between V
SS
and V
PP
C
VPP
*3
–
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.
*3 C
VPP
should be connected only when the V
PP
voltage is not stable.
Summary of Contents for S1C31D50
Page 461: ...25 1 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 25 Package TQFP12 48PIN ...
Page 462: ...25 2 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 QFP13 64PIN ...
Page 463: ...25 3 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 TQFP14 80PIN ...
Page 464: ...25 4 Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL Rev 1 00 QFP15 100PIN ...