MCF51QM32VFM(2012) View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

MCF51QM32VFM
(Rev.:2012)

Embedded - Microcontrollers, Integrated Circuits (ICs)

Freescale Semiconductor 

12-bit DAC electrical characteristics

Table 29. VREF full-range operating behaviors

Symbol

Vout

Vout

Vout

Vstep

Vtdrift

Ibg

Itr

ΔVLOAD

Description

Voltage reference output with factory trim at

nominal VDDA and temperature=25C

Voltage reference output with— factory trim

Voltage reference output — user trim

Voltage reference trim step

Temperature drift (Vmax -Vmin across the full

temperature range)

Bandgap only (MODE_LV = 00) current

Tight-regulation buffer (MODE_LV =10) current

Load regulation (MODE_LV = 10)

• current = + 1.0 mA

• current = - 1.0 mA

Min.

1.1965

1.1584

1.198

—

—

—

—

—

—

Typ.

1.2

—

—

0.5

—

—

—

Max.

1.2027

1.2376

1.202

—

80

80

1.1

2

—

5

—

Unit

V

V

V

mV

mV

µA

mA

mV

Notes

1

Tstup Buffer startup time

—

Vvdrift Voltage drift (Vmax -Vmin across the full voltage

—

range) (MODE_LV = 10, REGEN = 1)

—

100

µs

2

—

mV

1. Load regulation voltage is the difference between the VREF_OUT voltage with no load vs. voltage with defined load

Table 30. VREF limited-range operating requirements

Symbol

TA

Description

Temperature

Min.

0

Max.

50

Unit

Notes

°C

Table 31. VREF limited-range operating behaviors

Symbol

Vout

Description

Voltage reference output with factory trim

Min.

Max.

Unit

1.173

1.225

V

Notes

6.7 Timers

See General Switching Specifications.

MCF51QM128 Data Sheet, Rev. 6, 01/2012.

48

Freescale Semiconductor, Inc.

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