H8SSLASH2218 datasheet(593/750 Pages) RENESAS

Il numero della parte	H8S/2218

Spiegazioni elettronici	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

PDF	750 Pages

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Produttore elettronici	RENESAS [Renesas Technology Corp]

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Section 15 A/D Converter

Rev.6.00 Jun. 03, 2008 Page 545 of 698

REJ09B0074-0600

Table 15.3

A/D Conversion Time (Single Mode)

CKS1 = 0

CKS1 = 1

CKS0 = 0

CKS0 = 1

CKS0 = 0

CKS0 = 1

Item

Symbol

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

A/D conversion start

delay

—

Input sampling time

tSPL

—

127

—

A/D conversion time

tCONV

515

—

530

259

—

266

131

—

134

—

Note:

All values represent the number of states.

Table 15.4

A/D Conversion Time (Scan Mode)

CKS1

CKS0

Conversion Time (State)

512 (Fixed)

256 (Fixed)

128 (Fixed)

64 (Fixed)

15.5.4

External Trigger Input Timing

A/D conversion can be externally triggered. When the TRGS0 and TRGS1 bits are set to 11 in

ADCR, external trigger input is enabled at the

ADTRG pin. A falling edge at the ADTRG pin sets

the ADST bit to 1 in ADCSR, starting A/D conversion. Other operations, in both single and scan

modes, are the same as when the bit ADST has been set to 1 by software. Figure 15.6 shows the

timing.

ADTRG

Internal trigger signal

ADST

A/D conversion

Figure 15.6 External Trigger Input Timing

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