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MC68HC908GR8A_07 Datasheet, PDF (234/260 Pages) Freescale Semiconductor, Inc – Microcontrollers
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Electrical Specifications
Characteristic(1)
Symbol
Min
Typ(2)
Max
Unit
POR reset voltage(8)
POR rise time ramp rate(9)
VPORRST
0
700
RPOR
0.035
—
800
mV
—
V/ms
1. VDD = 5.0 Vdc ± 10%, 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 (fosc = 32.8 MHz). All inputs 0.2 V 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 (fosc = 32.8 MHz). All inputs 0.2 V 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. Measured with PLL and LVI enabled.
5. Stop IDD is measured with OSC1 = VSS.
6. Stop IDD with TBM enabled is measured using an external crystal clock source (fOSC = 8 MHz). All inputs 0.2 V from rail.
No dc loads. Less than 100 pF on all outputs. All inputs configured as inputs.
7. Pullups and pulldowns are disabled. Port B leakage is specified in 19.12 ADC Characteristics.
8. Maximum is highest voltage that POR is possible.
9. If minimum VDD is not reached before the internal POR reset is released, RST must be driven low externally until minimum
VDD is reached.
19.6 3.0 V DC Electrical Characteristics
Characteristic(1)
Output high voltage
(ILoad = –0.6 mA) all I/O pins
(ILoad = –4.0 mA) all I/O pins
(ILoad = –4.0 mA) pins PTC0–PTC1 only
Maximum combined IOH for port C, port E,
port PTD0–PTD3
Maximum combined IOH for port PTD4–PTD6,
port A, port B
Maximum total IOH for all port pins
Output low voltage
(ILoad = 0.5 mA) all I/O pins
(ILoad = 6.0 mA) all I/O pins
(ILoad = 10.0 mA) pins PTC0–PTC1 only
Maximum combined IOL for port C, port E,
port PTD0–PTD3
Maximum combined IOL for port PTD4–PTD6,
port A, port B
Maximum total IOL for all port pins
Input high voltage
All ports, IRQs, RESET
OSC1
Input low voltage
All ports, IRQs, RESET
OSC1
Symbol
VOH
VOH
VOH
IOH1
IOH2
IOHT
VOL
VOL
VOL
IOL1
IOL2
IOLT
VIH
VIL
Min
VDD – 0.3
VDD – 1.0
VDD – 0.5
—
—
—
—
—
—
—
—
—
0.7 x VDD
0.8 x VDD
VSS
Typ(2)
Max
Unit
—
—
V
—
—
V
—
—
V
—
30
mA
—
30
mA
—
60
mA
—
0.3
V
—
1.0
V
—
0.8
V
—
30
mA
—
30
mA
—
60
mA
—
VDD
V
—
0.3 x VDD
V
0.2 x VDD
Continued on next page
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
234
Freescale Semiconductor
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