K20P144M120SF3 Datasheet, PDF (58/80 Pages) Freescale Semiconductor, Inc – K20 Sub-Family Data Sheet

Peripheral operating requirements and behaviors
Table 35. VREF full-range operating behaviors
Symbol
V_out
V_out
V_out
V_step
V_tdrift
I_bg
I_tr
ΔV_LOAD
Description
Voltage reference output with factory trim at
nominal V_DDA and temperature=25C
Voltage reference output with— factory trim
Voltage reference output — user trim
Voltage reference trim step
Temperature drift (Vmax -Vmin across the full
temperature range)
Bandgap only current
High-power buffer current
Load regulation
• current = + 1.0 mA
• current = - 1.0 mA
Min.
1.1965
1.1584
1.198
—
—
—
—
—
—
Typ.
1.2
—
—
0.5
—
—
—
Max.
1.2027
1.2376
1.202
—
80
80
TBD
2
—
5
—
Unit
V
V
V
mV
mV
µA
mA
mV
Notes
1
1
1, 2
T_stup Buffer startup time
—
—
100
µs
V_vdrift Voltage drift (Vmax -Vmin across the full voltage
—
2
—
mV
1
range)
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 36. VREF limited-range operating requirements
Symbol
T_A
Description
Temperature
Min.
0
Max.
50
Unit
Notes
°C
Table 37. VREF limited-range operating behaviors
Symbol
V_out
Description
Voltage reference output with factory trim
Min.
Max.
Unit
1.173
1.225
V
Notes
6.7 Timers
See General switching specifications.
6.8 Communication interfaces
K20 Sub-Family Data Sheet Data Sheet, Rev. 3, 2/2012.
58
Preliminary
Freescale Semiconductor, Inc.