SH7101 datasheet(80/560 Pages) RENESAS

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Section 3 MCU Operating Modes

Rev.1.00 Sep. 18, 2008 Page 46 of 522

REJ09B0069-0100

Table 3.2

Maximum Operating Clock Frequency for Each Clock Mode

Pin Settings

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

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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