CXP86332 Просмотр технического описания (PDF) - Sony Semiconductor

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CXP86332

CMOS 8-bit Single Chip Microcomputer

Sony Semiconductor 

CXP86212/86216, CXP86324/86332, CXP86440/86448/86460

(3) A/D converter

(Ta = –20 to +75°C, VDD = 4.5 to 5.5V, Vss = 0V reference)

Item

Symbol

Pins

Conditions

Resolution

Linearity error

Zero transition

voltage

Full-scale transition

voltage

VZT∗1

VFT∗2

Ta = 25°C

VDD = 5.0V

Vss = 0V

Conversion time

Sampling time

tCONV

tSAMP

Analog input voltage VIAN AN0 to AN5

Min.

Typ.

–10

4910

26/fADC∗3

6/fADC∗3

0

10

4970

Max. Unit

8

Bits

±3 LSB

70

mV

5030 mV

µs

µs

VDD

V

Fig. 5. Definitions for A/D converter terms

FFh

FEh

01h

00h

VZT

Linearity error

∗1 VZT: Value at which the digital conversion value changes

from 00h to 01h and vice versa.

∗2 VFT: Value at which the digital conversion value changes

from FEh to FFh and vice versa.

∗3 fADC indicates the below values due to the contents of bit

6 (CKS) of the A/D control register (ADC: 00F6h):

fADC = fc (CKS = “0”), fc/2 (CKS = “1”)

VFT

Analog input

– 17 –

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