Specifications

EPSON 3–7
SED1210
SED1210
Electrical Specifications
DC Characteristics
V
DD = 5 V
VSS = 0 V, Ta = –20 to +70°C
Parameter Symbol Condition
Rating
Unit Pin
min typ max
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 OSC1, OSC2
Oscillator frequency fosc VDD = 5.0V V, Rf = 300 kΩ — 100 — kHz OSC1, OSC2
Operating frequency (1)
oscillator or external f
OSC VDD = 4.5V — — 300 kHz OSC1
clock 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 % OSC1, Φ
External clock rise time tr VDD = 4.5 to 5.5 V — — 50 ns OSC1, Φ
External clock fall time tf VDD = 4.5 to 5.5 V — — 50 ns OSC1, 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 DB7, Φ, A0
H-level input voltage (2) VIH2 VDD = 4.5 to 5.5 V 0.8 VDD VDD VDD V OSC1
L-level input voltage (2) VIL2 VDD = 4.5 to 5.5 V 0 0 0.2 VDD V OSC1
H-level input leakage current ILIH VDD = 5.5 V, VIH = 5.5 V — — |–1.0| µA Φ, OSC1,
L-level input leakage current ILIL VDD = 5.5 V, VIL = 0 V — — 1.0 µA DB0 to DB7
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 (1) IOH1 VDD = 4.5 to 5.5 V, VOH = 2.4 V |–1.0| — — mA DB7
L-level output current (1) IOL1 VDD = 4.5 to 5.5 V, VOL = 0.4 V 1.6 — — mA DB7
H-level output current (2) IOH2 VDD = 4.5 V, VOH = 4.0 V 200 — — µA FR, LP
L-level output current (2) IOL2 VDD = 4.5 V, VOL = 0.5V 200 — — µA XSCL, SO
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 SEG40
Segment driver output current (2) IOL VLCD level 12 — — µA SEG1 to SEG40
Segment driver output current (3) IOL VL2 level |±4| — — µA SEG1 to SEG40
Segment driver output current (4) IOL VL3 level |±4| — — µA SEG1 to SEG40
Driver current
IOH VDD–VLCD = 3.5V — 2 — µA
VL2, VL3
ICL 0.5 V voltage drop — 2 — µA
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 low
tRd1/tRd2
1/8 Duty — 11/400 — —
impedance duty
1/16 Duty — 11/200 — —
Command execution time t
comd From WR rising edge to — — 16/Φµs
the end of internal processing
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
VDD–VLCD = 3.5 V
Dividing resistor in
low impedance
state.
1/16 duty.
0.5 V voltage drop.
Measured on one
pin with other pins
open circuit.