Specifications

2–8 EPSON
SED1200 Series
Electrical Specifications
DC Characteristics
V
DD = 5 V
VSS = 0 V, Ta = –10 to +70°C
Parameter Symbol Condition
Rating
Unit Pin
min typ max
Logic supply voltage VDD 4.5 5.0 5.5 V VDD
Liquid crystal display supply
V
LCD VDD–5.5 — VDD–3.5 V VLCD
voltage
Oscillator feedback resistor Rf VDD = 5.0 V, fOSC = 100 kHz 240 310 380 kΩ XG, XD
Operating frequency (1)
oscillator or external clock fOSC VDD = 4.5 to 5.5 V — 100 300 kHz XG, XD
frequency
Operating frequency (2) Φ VDD = 4.5 to 5.5 V — — 3.2 MHz Φ
External clock duty VDD = 4.5 to 5.5 V 45 50 55 % XG, Φ
External clock rise time tr VDD = 4.5 to 5.5 V — — 50 ns XG, Φ
External clock fall time tf VDD = 4.5 to 5.5 V — — 50 ns XG, Φ
H-level input voltage (1) VIH1 VDD = 4.5 to 5.5 V 2.0 — VDD V CS, RD, WR,
L-level input voltage (1) VIL1 VDD = 4.5 to 5.5 V 0 — 0.8 V DB0 to DB3, Φ
H-level input voltage (2) VIH2 VDD = 4.5 to 5.5 V 0.8 VDD VDD VDD V
XG
L-level input voltage (2) VIL2 VDD = 4.5 to 5.5 V 0 0 0.2 VDD V
H-level input leakage current ILIH VDD = 5.5 V, VIH = 5.5 V — — |–1.0| µA Φ, XG,
L-level input leakage current ILIL VDD = 5.5 V, VIL = 0 V — — 1.0 µA DB0 to DB3
Input pull-up current IIPU VDD = 5.0 V, VIL = 0 V 3.0 10 30 µA CS, RD, WR, A0
H-level output current IOH VDD = 4.5 to 5.5 V, VOH = 2.4 V |–1.0| — — mA
DB3
L-level output current IOL VDD = 5.5 V, VOL = 0.4 V 1.6 — — mA
Common driver output current (1) IOH VDD level |–20| — — µA COM1 to COM16
Common driver output current (2) IOL VLCD level 20 — — µA COM1 to COM16
Common driver output current (3) IOL VL1 level |±8| — — µA COM1 to COM16
Common driver output current (4) IOL VL4 level |±8| — — µA COM1 to COM16
Segment driver output current (1) IOH VDD level |–12| — — µA SEG1 to SEG50
Segment driver output current (2) IOL VLCD level 12 — — µA SEG1 to SEG50
Segment driver output current (3) IOL VL2 level |±4| — — µA SEG1 to SEG50
Segment driver output current (4) IOL VL3 level |±4| — — µA SEG1 to SEG50
Voltage-divider resistor (1) Rd1 Normal conditions 30 130 300 kΩ
Voltage-divider resistor (2) Rd2 Low impedance state 3.0 13 30 kΩ
Voltage-divider resistor
tRd1/tRd2
1/8 Duty — 11/400 — —
low impedance duty
1/16 Duty — 11/200 — —
Command execution time tcomd
From WR rising edge to the
——
16/Φ
µs
end of internal processing (MHz)
V
DD = 5.0 V, VLCD = 0 V,
f
OSC = 100 kHz,
Average operating current IDD Φ = 1 MHz, — 80 150 µAVDD
CS = RD = WR = A0 = 5.0 V,
output open
V
DD=4.5 V
V
LCD=1.0 V
Voltage-divider
resistor in low
impedance state.
1/16 duty
0.5 V voltage drop
Measured on one
pin with other pins
open circuit.