TMP90C041 datasheet(6/12 Pages) TOSHIBA

Part #	TMP90C041

Description	CMOS 8-Bit Microcontrollers

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Manufacturer	TOSHIBA [Toshiba Semiconductor]

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TMP90C041

3. Operation

The following explains the TMP90C041 functions and basic

operations.

The CPU functions and internal I/O functions of the

TMP90C041 are the same as the TMP90C840A.

Refer to the “TMP90C840A” section concerning functions

which are not explained in the following.

3.1 CPU

The TMP90C041 has an internal high-performance 8-bit CPU.

Refer to the book TLCS Series CPU Core Architecture

concerning CPU operation.

3.2 Memory Map

The TMP90C041 supports a program memory of up to 64K

bytes and a data memory of maximum 1M bytes.

The program memory may be assigned to the address

space from 00000H to 0FFFFH, while the data memory can

be allocated to any address from 00000H to FFFFFH.

(1)

Internal I/O

The TMP90C041 provides a 48-byte address space

as an internal I/O area, whose addresses range from

FFC0H to FFEFH. This I/O area can be accessed by

the CPU using a short opcode in the “direct addressing

mode”.

Figure 3.1 is a memory map indicating the areas

accessible by the CPU in the respective addressing

mode.

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