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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
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Overall Configuration of the CPU

Functional block diagram of 8 bit microcontroller
Functional block diagram of 8 bit microcontroller

The CPU has a storage circuit that stores the memory address of the read instructions, a storage circuit that temporarily stores the read instructions themselves, a storage circuit that stores the data, and an arithmetic circuit that performs calculations.

Chapter 4 Toshiba Microcontrollers, Example of Core (TLCS-870/C1)

Overall Configuration of the CPU: CPU Core (1)
Overall Configuration of the CPU: CPU Core (2)
Overall Configuration of the CPU: Program Counter
Overall Configuration of the CPU: General-purpose Register
Overall Configuration of the CPU: PSW (Flag)
Overall Configuration of the CPU: Stack and Stack Pointer
Interrupt Processing
Interrupt Processing: Interrupt Type
Interrupt Processing: Maskable Interrupt
Interrupt Processing: Non Maskable Interrupt