Datasheet

MCP4021/2/3/4
DS21945E-page 8 © 2006 Microchip Technology Inc.
FIGURE 1-3: High-Voltage Increment Timing Waveform.
CS
U/D
t
HCUR
t
LO
t
HI
t
HUC
W
t
CSHI
t
S
1/f
UD
t
CSLO
t
S
t
HCUF
t
HUC
t
HCUF
5V
12V
SERIAL TIMING CHARACTERISTICS
Electrical Specifications: Unless otherwise noted, all parameters apply across the specified operating ranges.
Extended (E): V
DD
= +2.7V to 5.5V, T
A
= -40°C to +125°C.
Parameters Sym Min Typ Max Units Conditions
CS
Low Time t
CSLO
5——µs
CS High Time t
CSHI
500 — — ns
U/D High Time t
HI
500 — — ns
U/D Low Time t
LO
500 — — ns
Up/Down Toggle Frequency f
UD
—— 1MHz
HV U/D to CS Hold Time t
HUC
1.5 — — µs
HV CS to U/D Low Setup Time t
HCUF
8——µs
HV CS to U/D High Setup Time t
HCUR
4.5 — — µs
Wiper Settling Time t
S
0.5 — — µs 2.1 kΩ, C
L
= 100 pF
1——µs5kΩ, C
L
= 100 pF
2——µs10kΩ, C
L
= 100 pF
10 5 — µs 50 kΩ, C
L
= 100 pF
Wiper Response on Power-up t
PU
—200— ns
Internal EEPROM Write Time twc — — 5 ms @25°C
— — 10 ms -40°C to +125°C