SH7641 Datasheet, PDF(861/1036 Page) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7641 Series

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SH7641 Datasheet, PDF (861/1036 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7641 Series

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Section 21 A/D Converter

ADCSR

write cycle

PÏ

Address

Write

signal

Input sampling

timing

ADCSR address

ADF

tD

tSPL

[Legend]

tD : A/D conversion start delay

tSPL : Input sampling time

tCONV : A/D conversion time

tCONV

Figure 21.5 A/D Conversion Timing

Table 21.3 A/D Conversion Time (Single Mode)

CKS1 = 1, CKS0 = 1 CKS1 = 1, CKS0 = 1

Symbol Min. Typ. Max. Min. Typ. Max.

A/D conversion tD

start delay

18

â

21

10

â

13

Input sampling

tSPL

time

â

129 â

â

65

â

A/D conversion tCONV

time

535 â

545 275 â

285

Note: Values in the table are numbers of states (tcyc).

CKS1 = 1, CKS0 = 1

Min. Typ. Max.

6

â

9

â

33

â

141 â

151

Table 21.4 A/D Conversion Time (Multi Mode and Scan Mode)

CKS1

0

1

CKS0

0

1

0

1

Conversion Time (tcyc)

128 (constant)

256 (constant)

512 (constant)

Reserved

Rev. 4.00 Sep. 14, 2005 Page 811 of 982

REJ09B0023-0400

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