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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.
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