SH7108 Datasheet, PDF (80/560 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

Section 3 MCU Operating Modes
Table 3.2 Maximum Operating Clock Frequency for Each Clock Mode
Pin Settings
MD3
MD2
Maximum Operating Clock Frequency
0
0
12.5 MHz (Input clock × 1*, maximum of input clock: 12.5 MHz)
0
1
25 MHz (Input clock × 2*, maximum of input clock: 12.5 MHz)
1
0
40 MHz (Input clock × 4*, maximum of input clock: 10 MHz)
1
1
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
MD0
MD1
MD2
MD3
FWP
Input/Output
Input
Input
Input
Input
Input
Function
Designates operating mode through the level applied to this pin
Designates operating mode through the level applied to this pin
Designates clock mode through the level applied to this pin
Designates clock mode through the level applied to this pin
Pin for the hardware protection against programming/erasing the
on-chip flash memory
Rev.1.00 Sep. 18, 2008 Page 46 of 522
REJ09B0069-0100