MPC5644B View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

MFG CO.

MPC5644B

Microcontroller

Freescale Semiconductor 

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From this formula, in the worst case (when VA is maximum, that is for instance 5 V), assuming to accept a maximum error of

half a count, a constraint is evident on CF value:

ADC_0 (10-bit)

CF  2048  CS

Eqn. 12

ADC_1 (12-bit)

CF  8192  CS

Eqn. 13

4.17.1.2 ADC electrical characteristics

Table 41. ADC input leakage current

Symbol C

Parameter

Conditions

Value

Unit

Min Typ Max

ILKG CC C Input leakage current TA = 40 °C No current injection on adjacent pin —

C

TA = 25 °C

—

C

TA = 105 °C

—

P

TA = 125 °C

—

1

— nA

1

—

8 200

45 400

NOTE

All ADC conversion characteristics described in the table below are applicable only for the

precision channels. The data for semi-precision and extended channels is awaited and same

will be subsequently updated in later revs.

Table 42. ADC conversion characteristics (10-bit ADC_0)

Symbol C

Parameter

VSS_ADC0 SR — Voltage on

VSS_HV_ADC0

(ADC_0 reference)

pin with respect to

ground (VSS_HV)2

VDD_ADC0 SR — Voltage on

VDD_HV_ADC0 pin

(ADC_0 reference)

with respect to

ground (VSS_HV)

VAINx SR — Analog input voltage3

fADC0 SR — ADC_0 analog

frequency

tADC0_PU SR — ADC_0 power up

delay

Conditions1

—

—

—

—

—

Value

Unit

Min

Typ

Max

0.1

—

0.1

V

VDD_HV_A  0.1 — VDD_HV_A + 0.1 V

VSS_ADC0  0.1 — VDD_ADC0 + 0.1 V

6

—

32 + 2% MHz

—

—

1.5

µs

MPC5646C Microcontroller Data Sheet, Rev. 3

Freescale Semiconductor

Preliminary—Subject to Change Without Notice

77

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