Datasheet

Table 3.2 indicates the setting method for the clock mode.

Table 3.2 Clock Mode Setting

MD3 MD2 Clock Mode

0 0 PLL ON × 1

0 1 PLL ON × 2

1 0 PLL ON × 4

1 1 Reserved (PROM mode only)

3.2 Explanation of Operating Modes

Table 3.3 describes the operating modes.

Table 3.3 Operating Modes

Mode Description

(MCU) Mode 0 CS0 area becomes an external memory space with 8-bit bus width for

the 112-pin version, and 16-bit for the 144-pin version.

(MCU) Mode 1 CS0 area becomes an external memory space with 16-bit bus width for

the 112-pin version, and 32-bit for the 144-pin version

(MCU) Mode 2 The on-chip ROM becomes effective. The bus width for the on-chip ROM

space is 32 bit.

Mode 3 (single chip

mode)

Any port can be used, but external addresses can not be employed.

Mode 4 (PROM mode) On-chip ROM can be programmed using a general PROM writer.

Clock mode The input waveform frequency can be used as is, doubled or quadrupled

as an internal clock in modes 0 to 3.