MCP4021/2/3/4
12V
CS
5V
tHUC
U/D
W
tCSLO
tHCUF
tLO
1/fUD
tHCUR
tHI
tS
tCSHI
tHUC tHCUF
tS
FIGURE 1-3:
High-Voltage Increment Timing Waveform.
SERIAL TIMING CHARACTERISTICS
Electrical Specifications: Unless otherwise noted, all parameters apply across the specified operating ranges.
Extended (E): VDD = +2.7V to 5.5V, TA = -40°C to +125°C.
Parameters
Sym Min Typ Max Units
Conditions
CS Low Time
tCSLO
5
—
CS High Time
tCSHI
500
—
U/D High Time
tHI
500
—
U/D Low Time
tLO
500
—
Up/Down Toggle Frequency
fUD
—
—
HV U/D to CS Hold Time
tHUC
1.5
—
HV CS to U/D Low Setup Time tHCUF
8
—
HV CS to U/D High Setup Time tHCUR
4.5
—
Wiper Settling Time
tS
0.5
—
1
—
2
—
10
5
Wiper Response on Power-up
tPU
Internal EEPROM Write Time
twc
—
200
—
—
—
—
—
µs
—
ns
—
ns
—
ns
1
MHz
—
µs
—
µs
—
µs
—
µs 2.1 kΩ, CL = 100 pF
—
µs 5 kΩ, CL = 100 pF
—
µs 10 kΩ, CL = 100 pF
—
µs 50 kΩ, CL = 100 pF
—
ns
5
ms @25°C
10
ms -40°C to +125°C
DS21945E-page 8
© 2006 Microchip Technology Inc.