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MC908JL3ECPE Datasheet, PDF (141/180 Pages) Freescale Semiconductor, Inc – Microcontrollers
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3V Control Timing
Table 16-7. DC Electrical Characteristics (3V) (Continued)
Characteristic(1)
Symbol
Min
Typ(2)
Max
Unit
LVI reset voltage
VLVR3
2.0
2.4
2.69
V
1. VDD = 2.7 to 3.3 Vdc, VSS = 0 Vdc, TA = TL to TH, unless otherwise noted.
2. Typical values reflect average measurements at midpoint of voltage range, 25 °C only.
3. Run (operating) IDD measured using external square wave clock source (fOP = 2MHz). All inputs 0.2V from rail. No dc
loads. Less than 100 pF on all outputs. CL = 20 pF on OSC2. All ports configured as inputs. OSC2 capacitance linearly
affects run IDD. Measured with all modules enabled.
4. Wait IDD measured using external square wave clock source (fOP = 2MHz). All inputs 0.2V from rail. No dc loads. Less
than 100 pF on all outputs. CL = 20 pF on OSC2. All ports configured as inputs. OSC2 capacitance linearly affects wait IDD.
5. Stop IDD measured with OSC1 grounded; no port pins sourcing current. LVI is disabled.
6. Maximum is highest voltage that POR is guaranteed.
7. If minimum VDD is not reached before the internal POR reset is released, RST must be driven low externally until minimum
VDD is reached.
8. RPU1 and RPU2 are measured at VDD = 5.0V.
16.9 3V Control Timing
Table 16-8. Control Timing (3V)
Characteristic(1)
Symbol
Min
Max
Unit
Internal operating frequency(2)
fOP
—
4
MHz
RST input pulse width low(3)
tIRL
1.5
—
μs
1. VDD = 2.7 to 3.3 Vdc, VSS = 0 Vdc, TA = TL to TH; timing shown with respect to 20% VDD and 70% VDD, unless otherwise
noted.
2. Some modules may require a minimum frequency greater than dc for proper operation; see appropriate table for this infor-
mation.
3. Minimum pulse width reset is guaranteed to be recognized. It is possible for a smaller pulse width to cause a reset.
MC68HC908JL3E Family Data Sheet, Rev. 4
Freescale Semiconductor
141
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