MCF51EM128 查看數據表（PDF） - Freescale Semiconductor

零件编号

产品描述 (功能)

生产厂家

MCF51EM128

ColdFire Microcontroller

Freescale Semiconductor 

Electrical Characteristics

Table 5. Parameter Classifications

P Those parameters are guaranteed during production testing on each individual device.

C

Those parameters are achieved by the design characterization by measuring a statistically relevant

sample size across process variations.

Those parameters are achieved by design characterization on a small sample size from typical devices

T under typical conditions unless otherwise noted. All values shown in the typical column are within this

category.

D Those parameters are derived mainly from simulations.

NOTE

The classification is shown in the column labeled “C” in the parameter

tables where appropriate.

2.2 Absolute Maximum Ratings

Absolute maximum ratings are stress ratings only, and functional operation at the maxima is not

guaranteed. Stress beyond the limits specified in Table 6 may affect device reliability or cause permanent

damage to the device. For functional operating conditions, refer to the remaining tables in this section.

This device contains circuitry protecting against damage due to high static voltage or electrical fields;

however, it is advised that normal precautions be taken to avoid application of any voltages higher than

maximum-rated voltages to this high-impedance circuit. Reliability of operation is enhanced if unused

inputs are tied to an appropriate logic voltage level (for instance, either VSS or VDD).

Table 6. Absolute Maximum Ratings

Rating

Symbol

Value

Unit

Supply voltage

VDD

Input voltage

VIn

Instantaneous maximum current

Single pin limit (applies to all port pins except PTB1

ID

and PTB3)1, 2, 3

–0.3 to 4.0

V

–0.3 to VDD + 0.3

V

±25

mA

Instantaneous maximum current

Single pin limit (applies to PTB1 and PTB3)4, 5, 6

ID

±50

mA

Maximum current into VDD

IDD

120

mA

Storage temperature

Tstg

–55 to 150

°C

1 Input must be current limited to the value specified. To determine the value of the required

current-limiting resistor, calculate resistance values for positive (VDD) and negative (VSS) clamp

voltages, then use the larger of the two resistance values.

2 All functional non-supply pins are internally clamped to VSS and VDD.

MCF51EM256 Series ColdFire Microcontroller Data Sheet, Rev.2

Freescale Semiconductor

Preliminary—Subject to Change Without Notice

17

Share Link: