MC908QY8CDWE Datasheet, PDF(211/232 Page) Freescale Semiconductor, Inc – Addendum to MC68HC908QB8, rev. 3

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MC908QY8CDWE Datasheet, PDF (211/232 Pages) Freescale Semiconductor, Inc – Addendum to MC68HC908QB8, rev. 3

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18.5 5-V DC Electrical Characteristics

5-V DC Electrical Characteristics

Characteristic(1)

Symbol

Min

Typ(2)

Max

Unit

Output high voltage

ILoad = â2.0 mA, all I/O pins

ILoad = â10.0 mA, all I/O pins

ILoad = â15.0 mA, PTA0, PTA1, PTA3âPTA5 only

Maximum combined IOH (all I/O pins)

Output low voltage

ILoad = 1.6 mA, all I/O pins

ILoad = 10.0 mA, all I/O pins

ILoad = 15.0 mA, PTA0, PTA1, PTA3âPTA5 only

Maximum combined IOL (all I/O pins)

Input high voltage

PTA0âPTA5, PTB0âPTB7

VOH

VDD â 0.4

â

VDD â 1.5

â

VDD â 0.8

â

IOHT

â

â

VOL

â

â

â

â

â

â

IOHL

â

â

VIH

0.7 x VDD

â

â

â

V

â

50

mA

0.4

1.5

V

0.8

50

mA

VDD

V

Input low voltage

PTA0âPTA5, PTB0âPTB7

Input hysteresis(3)

DC injection current, all ports(4)

Total dc current injection (sum of all I/O)(4)

Ports Hi-Z leakage current

Capacitance

Ports (as input)(3)

VIL

VHYS

IINJ

IINJTOT

IIL

CIN

VSS

0.06 x VDD

â2

â25

â1

â

â

â

â

â

Â±0.1

â

0.3 x VDD

V

â

V

+2

mA

+25

mA

+1

Î¼A

8

pF

POR rearm voltage

POR rise time ramp rate(3)(5)

Monitor mode entry voltage (3)

Pullup resistors(6)

PTA0âPTA5, PTB0âPTB7

Pulldown resistors(7)

PTA0âPTA5

VPOR

750

â

RPOR

0.035

â

VTST

VDD + 2.5

â

RPU

16

26

RPD

16

26

â

mV

â

V/ms

9.1

V

36

kÎ©

36

kÎ©

Low-voltage inhibit reset, trip falling voltage

Low-voltage inhibit reset, trip rising voltage

Low-voltage inhibit reset/recover hysteresis

VTRIPF

VTRIPR

VHYS

3.90

4.00

â

4.20

4.50

V

4.30

4.60

V

100

â

mV

1. VDD = 4.5 to 5.5 Vdc, VSS = 0 Vdc, TA = TL to TH, unless otherwise noted.

2. Typical values reflect average measurements at midpoint of voltage range, 25â¢C only. Typical values are for reference only

and are not tested in production.

3. Values are based on characterization results, not tested in production.

4. Guaranteed by design, not tested in production.

5. If minimum VDD is not reached before the internal POR reset is released, the LVI will hold the part in reset until minimum

VDD is reached.

6. RPU is measured at VDD = 5.0 V.

7. RPD is measured at VDD = 5.0 V, Pulldown resistors only available when KBIx is enabled with KBIxPOL =1.

MC68HC908QB8 Data Sheet, Rev. 3

Freescale Semiconductor

209

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