SH7047 datasheet(86/764 Pages) RENESAS

86 / 764 page

Rev. 2.00, 09/04, page 46 of 720

The clock mode is selected by the input of MD2 and MD3 pins.

Table 3.2

Maximum Operating Clock Frequency for Each Clock Mode

Pin Setting

MD3

MD2

Maximum Operating Clock Frequency

12.5 MHz (Input clock

× 1*, maximum of input clock: 12.5 MHz)

25 MHz (Input clock

× 2*, maximum of input clock: 12.5 MHz)

40 MHz (Input clock

× 4*, maximum of input clock: 10 MHz)

50 MHz (Input clock

× 4 for system clock, Input clock × 2 for

peripheral clock, maximum of input clock: 12.5 MHz)

Note:

The frequencies for the system and peripheral module clocks are the same.

3.2

Input/Output Pins

Table 3.3 describes the configuration of operating mode related pins.

Table 3.3

Operating Mode Pin Configuration

Pin Name

Input/Output

Function

MD0

Input

Designates operating mode through the level applied to this pin

MD1

Input

Designates operating mode through the level applied to this pin

MD2

Input

Designates clock mode through the level applied to this pin

MD3

Input

Designates clock mode through the level applied to this pin

FWP

Input

Pin for the hardware protection against programming/erasing the

on-chip flash memory

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