Specifications
4–32 EPSON
SED1220
DC CHARACTERISTICS
VDD = 0 V, VSS = –3.6 V to –2.4 V, Ta = –30 to 85°C unless otherwise specified.
Item Symbol Condition min typ max Unit Applicable pin
Power Operatable V
SS –3.6 –3.0 –2.4 V VSS
supply Data retain –3.6 –2.0 *1
voltage (1) voltage
Power Operatable V
5 –7.0 –4.0 V V5 *2
supply Operatable V
1, V2 0.6×V5 VDD VV1, V2
voltage (2) Operatable V3, V4 V5 0.4×V5 VV3, V4
High-level input voltage VIHC 0.2×VSS VDD V*3
Low-level input voltage V
ILC VSS 0.8×VSS V*3
Input leakage current I
LI VIN = VDD or VSS –1.0 1.0 µA*3
LC driver ON resistance R
ON Ta=25°CV5=–7.0V 20 40 KΩ COM,SEG
∆V=0.1V *4
Static current consumption I
DDQ 0.1 5.0 µAVDD
Dynamic current IDD Display state V5 = –6 V without load 80 µAVDD *5
consumption Standby state Oscillation ON, Power 20 µAV
DD
OFF, VSS = –3V
without load
Sleep state Oscillation OFF, Power 5 µAV
DD
OFF, VSS = –3.0V
Access state f
cyc=200KHz, 500 µAVDD *6
V
SS = –3.0V
Input pin capacity C
IN Ta=25°C f=1MHz 5.0 8.0 pF *3
Frame frequency f
FR Ta=25°C VSS=–3.0V 70 100 130 Hz *10
External clock frequency f
ck Display of 2 lines 23.4 KHz *10 *11
f
ck Display of 3 lines 33.8 KHz *10 *11
Dynamic system
Input voltage V
S1 –2.3 –2.1 –1.9 V *9
Amplified voltage V
OUT When voltage is tripled –6.9 –6.3 –5.7 V VOUT
output voltage
Voltage follower V
5 –7.0 –4.0 V
operating voltage
Reference voltage V
REG Ta = 25°C –2.06 –2.0 –1.94 V
*1: A wide operating voltage range is guaranteed but an
abrupt voltage variation in the access status of the
MPU is not guaranteed.
*2: When the voltage is Tripled, care must be paid to
supply the voltage V
SS so that operating voltage of
VOUT and V5 may not be exceeded.
*3: D0 ~ D5, D6 (SCL), D7 (SI), A0, RES, CS WR (E),
P/S, IF
*4: This is a resistance value when a voltage of 0.1 V is
applied between output pin SEGn, SEGSn, COMn or
COMSn, and each power pin (V
1, V2, V3 or V4). It
is specified in the range of operating voltage (2).
R
ON = 0.1 V / ∆I
(∆I: Current flowing when 0.1 V is
applied between the power and output)
Built-in power supply
Reset time tR 1.0 µs*7
Reset pulse width t
RW 10 µs*8
Reset start time t
RES 50 ns *8