TMP90C041A View Datasheet(PDF) - Toshiba

Part Name

Description

Manufacturer

TMP90C041A

CMOS 8-Bit Microcontrollers

Toshiba 

TMP90C041A

3. Operation

The following explains the TMP90C041A functions and basic

operations.

The CPU functions and internal I/O functions of the

TMP90C041A are the same as the TMP90C840A.

Refer to the “TMP90C840A” section concerning functions

which are not explained the following.

3.1 CPU

The TMP90C041A 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 TMP90C041A 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 TMP90C041A 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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Figure 3.2. Memory Map

TOSHIBA CORPORATION

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