MCF51EM128 查看數據表（PDF） - Freescale Semiconductor

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MCF51EM128

ColdFire Microcontroller

Freescale Semiconductor 

Electrical Characteristics

Table 10. DC Characteristics (continued)

Num C

Parameter

Symbol

Min

Typical1

Max

Unit

PTA[7:0], PTB[7:0], PTC[2:0], PTE[6:0],

C

low-drive strength.

VDD ≥ 1.8 V, ILoad = 2 mA

8

P

Output low

voltage

PTA[7:0], PTB[7:0], PTC[2:0], PTE[6:0],

high-drive strength.

VDD ≥ 2.7 V, ILoad = 10 mA

VOL

PTA[7:0], PTB[7:0], PTC[2:0], PTE[6:0],

C

high-drive strength.

VDD ≥ 1.8 V, ILoad = 3 mA

PTC[7:3], PTD[7:0], PTE7, PTF[7:0],

C

LCD35/CLKOUT, MOSI2, MISO2,

SCK2, SS2, low drive strength.

VDD ≥ 1.8 V, ILoad = 0.5 mA

PTC[7:3], PTD[7:0], PTE7, PTF[7:0],

9

P

Output low

voltage

LCD35/CLKOUT, MOSI2, MISO2,

SCK2, SS2, high-drive strength.

VOL

VDD ≥ 2.7 V, ILoad = 3 mA

PTC[7:3], PTD[7:0], PTE7, PTF[7:0],

C

LCD35/CLKOUT, MOSI2, MISO2,

SCK2, SS2, high-drive strength.

VDD ≥ 1.8 V, ILoad = 1 mA

10

D

Output low

current

Max total IOL for all ports

IOLT

All digital inputs except tamper_in,

VDD > 2.7 V

11

P

Input high

voltage

All digital inputs except tamper_in,

2.7 V > VDD ≥ 1.8 V

VIH

Tamper_in

All digital inputs except tamper_in,

VDD > 2.7 V

12

P

Input low

voltage

all digital inputs except tamper_in,

2.7 V > VDD ≥ 1.8 V

VIL

Tamper_in

13 C Input hysteresis; all digital inputs

14 P Input leakage current; input only pins4

15 P High Impedance (off-state) leakage current4

16 P Internal pullup resistors5

17 P Internal pulldown resistors6

18 C Input capacitance; all non-supply pins

19 P POR rearm voltage

20 D POR rearm time

Low-voltage High range — VDD falling

21 P detection

threshold

High range — VDD rising

Vhys

|IIn|

|IOZ|

RPU

RPD

CIn

VPOR

tPOR

VLVDH

—

—

—

0.70 × VDD

0.85 × VDD

1.5

—

—

—

0.06 × VDD

—

—

17.5

17.5

—

0.9

10

2.300

2.370

—

—

—

—

—

—

—

—

—

—

0.1

0.1

—

—

—

1.4

—

2.355

2.425

0.50

V

0.50

V

100

mA

—

—

V

—

0.35 × VDD

0.3 × VDD

V

0.5

—

mV

1

μA

1

μA

52.5

kΩ

52.5

kΩ

8

pF

2.0

V

—

μs

2.410

V

2.480

MCF51EM256 Series ColdFire Microcontroller Data Sheet, Rev.2

Freescale Semiconductor

Preliminary—Subject to Change Without Notice

21

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