SH7014 Datasheet, PDF (86/754 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

3. Operating Modes
3.2 Explanation of Operating Modes
Table 3.3 describes the operating modes.
Table 3.3 Operating Modes
Mode
(MCU) Mode 0
(MCU) Mode 1
(MCU) Mode 2
Mode 3 (single chip
mode)
Clock mode
Description
CS0 area becomes an external memory space with 8-bit bus width.
CS0 area becomes an external memory space with 16-bit bus width.
The on-chip ROM becomes effective. The bus width for the on-chip
ROM space is 32 bit.
Any port can be used, but external addresses can not be employed.
The input waveform frequency can be used as is, doubled or
quadrupled as an internal clock in modes 0 to 3.
3.3 Pin Configuration
Table 3.4 describes the function of each operating mode related pin.
Table 3.4 Operating Mode Pin Function
Pin Name
XTAL
EXTAL
PLLCAP
MD0
MD1
MD2
MD3
Input/Output Function
Input
Connects to a crystal oscillator
Input
Connects to a crystal oscillator, or used for external clock input pin
Input
Connects to a capacitor for PLL circuit operation
Input
Designates operating mode through the level applied to this pin
Input
Designates operating mode through the level applied to this pin
Input
Designates clock mode through the level applied to this pin
Input
Designates clock mode through the level applied to this pin
Rev.5.00 Sep. 27, 2007 Page 52 of 716
REJ09B0398-0500