Renesas PROM Programming Adapters PCA7438F-64A Spécifications télécharger pdf (Page 52)

Rev.2.40 Jun 14, 2004 page 52 of 56

38C1 Group

A/D Converter Characteristics

Table 17 A/D converter recommended operating condition

(Vcc = 2.0 to 5.5 V (One Time PROM version: 2.2 to 5.5 V), Ta = –20 to 85°C, unless otherwise noted)

Power source voltage

“H” input voltage

ADKEY

0–ADKEY3

“L” input voltage

ADKEY0–ADKEY3

AD converter control clock

(low-speed mode and on-

chip oscillator mode

excluded)

Unit

MHz

Limits

Parameter

Min.

2.0

2.2

0.9VCC

Typ.

5.0

Max.

5.5

VCC

0.7VCC✕–0.5

20✕VCC–38

20✕VCC–26

40✕VCC–82

10✕VCC–19

8.0

Symbol

Mask ROM version

One Time PROM version

Mask ROM version VCC ≤ 2.2 V

2.2 < VCC ≤ 2.5 V

One Time PROM version VCC ≤ 2.5 V

2.5 < VCC ≤ 2.7 V

Mask ROM version 2.5 < VCC ≤ 5.5 V

One Time PROM version 2.7 < VCC ≤ 5.5 V

Conditions

VDD

VIH

VIL

f(XIN)

Table 18 A/D converter characteristics

(Vcc = 2.0 to 5.5 V (One Time PROM version: 2.2 to 5.5 V), Ta = –20 to 85°C, unless otherwise noted)

Resolution

Linearity error

Differential non-linearity error

Zero transition voltage

Full-scale transition voltage

Absolute accuracy

(quantification error excluded)

Conversion time (Note)

Analog input current

Unit

BIT

LSB

tc(φAD)

µA

Limits

Parameter

Min.

5070

2535

106

Typ.

5100

2550

Max.

±1

±0.9

5120

2560

±2

±5

±3

109

±5

Symbol

Ta = 25 °C, 2.5 ≤ VCC ≤ 5.5 V

VCC = 5.12 V, Ta = 25 °C

VCC = 2.56 V, Ta = 25 °C

VCC = 5.12 V, Ta = 25 °C

VCC = 2.56 V, Ta = 25 °C

2.2 < V

≤ 5.5 V (2.7 < V

≤ 5.5 V for One Time PROM version),

f(XIN) ≤ 8.0 MHz, or low-speed or on-chip oscillator mode

2.2 < V

≤ 2.5 V (2.5 < V

≤ 2.7 V for One Time PROM version),

f(XIN) ≤ 2.0 MHz, or low-speed or on-chip oscillator mode

2.2 ≤ VCC < 2.3 V for One Time PROM version

Low-speed or on-chip oscillator mode excluded

Condition except above

Test conditions

—

LIN

DIF

V0T

VFST

ABS

Tconv

IIA

Note: The operation clock is XIN in the middle- or high-speed mode, or the on-chip oscillator in the other modes.

When the A/D conversion is executed in the middle- or high-speed mode, set f(X

IN) ≥ 500 kHz.

tc(φAD): One cycle of control clock for A/D converter. X

IN input is used in the middel- or high-speed mode, and on-chip oscillator is used in the low- or on-chip

oscillator mode for the control clock.

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Renesas PROM Programming Adapters PCA7438F-64A Spécifications Page 52

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