K61P256M120SF3 Datasheet, PDF (15/90 Pages) Freescale Semiconductor, Inc – K61 Sub-Family Data Sheet

General
the pads. If this limit cannot be observed then a current limiting resistor is required. The negative DC injection current
limiting resistor is calculated as R=(V_{DIO_MIN}-V_IN)/|I_IC|.
2. Analog pins are defined as pins that do not have an associated general purpose I/O port function.
3. All analog pins are internally clamped to V_SS and V_DD through ESD protection diodes. If V_IN is greater than V_{AIO_MIN}
(=V_SS-0.3V) and V_IN is less than V_{AIO_MAX}(=V_DD+0.3V) is observed, then there is no need to provide current limiting
resistors at the pads. If these limits cannot be observed then a current limiting resistor is required. The negative DC
injection current limiting resistor is calculated as R=(V_{AIO_MIN}-V_IN)/|I_IC|. The positive injection current limiting resistor is
calcualted as R=(V_IN-V_{AIO_MAX})/|I_IC|. Select the larger of these two calculated resistances.
5.2.2 LVD and POR operating requirements
Table 2. LVD and POR operating requirements
Symbol
V_POR
V_LVDH
V_LVW1H
V_LVW2H
V_LVW3H
V_LVW4H
V_HYSH
V_LVDL
V_LVW1L
V_LVW2L
V_LVW3L
V_LVW4L
V_HYSL
V_BG
t_LPO
Description
Falling VDD POR detect voltage
Falling low-voltage detect threshold — high
range (LVDV=01)
Low-voltage warning thresholds — high range
• Level 1 falling (LVWV=00)
• Level 2 falling (LVWV=01)
• Level 3 falling (LVWV=10)
• Level 4 falling (LVWV=11)
Low-voltage inhibit reset/recover hysteresis —
high range
Falling low-voltage detect threshold — low range
(LVDV=00)
Low-voltage warning thresholds — low range
• Level 1 falling (LVWV=00)
• Level 2 falling (LVWV=01)
• Level 3 falling (LVWV=10)
• Level 4 falling (LVWV=11)
Low-voltage inhibit reset/recover hysteresis —
low range
Bandgap voltage reference
Internal low power oscillator period
factory trimmed
Min.
0.8
2.48
2.62
2.72
2.82
2.92
—
1.54
1.74
1.84
1.94
2.04
—
0.97
900
Typ.
1.1
2.56
2.70
2.80
2.90
3.00
±80
1.60
1.80
1.90
2.00
2.10
±60
1.00
1000
Max.
1.5
2.64
2.78
2.88
2.98
3.08
—
1.66
1.86
1.96
2.06
2.16
—
1.03
1100
1. Rising thresholds are falling threshold + hysteresis voltage
Table 3. VBAT power operating requirements
Symbol Description
V_{POR_VBAT} Falling VBAT supply POR detect voltage
Min.
0.8
Typ.
1.1
Max.
1.5
Unit
Notes
V
V
1
V
V
V
V
mV
V
1
V
V
V
V
mV
V
μs
Unit
Notes
V
K61 Sub-Family Data Sheet Data Sheet, Rev. 3, 2/2012.
Freescale Semiconductor, Inc.
Preliminary
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