Peripheral operating requirements and behaviors
Table 27. VREF full-range operating behaviors (continued)
Symbol Description
Min.
Typ.
Max.
Unit
Notes
Vout
Vout
Voltage reference output — factory trim
1.1584
—
1.2376
V
Voltage reference output — user trim
Voltage reference trim step
1.193
—
—
0.5
—
1.197
—
V
Vstep
Vtdrift
mV
mV
Temperature drift (Vmax -Vmin across the full
temperature range)
—
80
Ibg
Ilp
Bandgap only current
—
—
—
—
—
—
80
360
1
µA
uA
mA
µV
1
1
Low-power buffer current
High-power buffer current
Ihp
1
ΔVLOAD Load regulation
• current = 1.0 mA
1, 2
—
200
—
Tstup
Buffer startup time
—
—
—
2
100
—
µs
Vvdrift
Voltage drift (Vmax -Vmin across the full voltage
range)
mV
1
1. See the chip's Reference Manual for the appropriate settings of the VREF Status and Control register.
2. Load regulation voltage is the difference between the VREF_OUT voltage with no load vs. voltage with defined load
Table 28. VREF limited-range operating requirements
Symbol
Description
Min.
Max.
Unit
Notes
Notes
TA
Temperature
0
50
°C
Table 29. VREF limited-range operating behaviors
Symbol
Description
Min.
Max.
Unit
Vout
Voltage reference output with factory trim
1.173
1.225
V
6.7 Timers
See General switching specifications.
6.8 Communication interfaces
K20 Sub-Family Data Sheet, Rev. 4 5/2012.
44
Freescale Semiconductor, Inc.
FREESCALE [ Freescale ]
