UPD75328GC datasheet(45/66 Pages) NEC

45 / 66 page

µPD75328

A/D CONVERTER (Ta = -10 to +85

°C, VDD = 3.5 to 6.0 V, AVSS = VSS = 0 V)

Parameter

Symbol

Conditions

MIN.

TYP.

MAX.

Unit

Resolution

bit

Absolute Accuracy*1

2.5 V

≤ AVREF ≤ VDD*2

±1.5

LSB

Conversion Time

tCONV

168/fX

Sampling Time

tSAMP

44/fX

Analog Input Voltage

VIAN

AVSS

AVREF

Analog Input Impedance

RAN

1000

Ω

AVREF Current

IREF

0.25

2.0

*1: Absolute accuracy excluding quantization error (

± 1–

2 LSB)

2: Set ADM1 as follows, in respect to the reference voltage of the AD converter (AVREF).

ADM1 can be set to either 0 or 1 when 0.6VDD

≤ AVREF ≤ 0.65VDD

3: Time since execution of conversion start instruction until EOC = 1 (fX = 4.19 MHz: 40.1

µs)

4: Time since execution of conversion start instruction until end of sampling (fX = 4.19 MHz: 10.5

µs)

2.5 V

0.6 V DD

0.65 V DD

V DD (3.5 to 6.0 V)

ADM1=0

ADM1=1

AV REF

UPD75328GC Datasheet(PDF) 45 Page - NEC

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