II CORE BLOCK: BCU (Bus Control Unit)

Area 10

Area 10 is an external memory area that includes the boot address (0xC00000).

Area 10 boot mode

The boot mode can be configured using the external pins EA10MD[1:0].

The pins EA10MD[1:0] specify the boot mode. These inputs must both be at High level because this device supports only one boot mode, from external ROM.

Table 4.6 Area 10 Boot Mode Selection

EA10MD[1:0] pins

Area 10 boot mode

00 –

01 –

10–

11External ROM boot mode

External ROM boot mode

The CPU boots by the external ROM (ROM, Flash, SRAM, etc.). This mode uses the bus condition set by the BCU registers for area 10.

Area 10 memory map

Figure 4.4 shows the memory map of area 10.

External ROM boot mode

0x0FFFFFF

Area 10

 

 

External memory

 

is accessed.

 

Set-up example

 

25 MHz

 

5 wait

0x0C00000

Figure 4.4 Area 10 Memory Map

Area 3

This device does not support Area 3.

B-II-4-8

EPSON

S1C33210 FUNCTION PART