saf-xc878m-16ffi5v Infineon Technologies Corporation, saf-xc878m-16ffi5v Datasheet - Page 28
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saf-xc878m-16ffi5v
Manufacturer Part Number
saf-xc878m-16ffi5v
Description
8-bit Single-chip Microcontroller
Manufacturer
Infineon Technologies Corporation
Datasheet
1.SAF-XC878M-16FFI5V.pdf
(145 pages)
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Part Number:
saf-xc878m-16ffi5vAC
Manufacturer:
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3
Chapter 3
3.1
The XC87x is based on a high-performance 8-bit Central Processing Unit (CPU) that is
compatible with the standard 8051 processor. While the standard 8051 processor is
designed around a 12-clock machine cycle, the XC87x CPU uses a 2-clock machine
cycle. This allows fast access to ROM or RAM memories without wait state. The
instruction set consists of 45% one-byte, 41% two-byte and 14% three-byte instructions.
The XC87x CPU provides a range of debugging features, including basic stop/start,
single-step execution, breakpoint support and read/write access to the data memory,
program memory and Special Function Registers (SFRs).
Figure 6
Figure 6
Data Sheet
Legacy External Interrupts (IEN0, IEN1)
shows the CPU functional blocks.
Non-Maskable Interrupt
provides an overview of the XC87x functional description.
Functional Description
Processor Architecture
Program Memory
External Interrupts
External Data
CPU Block Diagram
Memory Wait
Memory
Reset
f
CCLK
16-bit Registers &
Memory Interface
Opcode Decoder
State Machine &
Power Saving
Core SFRs
Immediate
Opcode &
Controller
Registers
Interrupt
21
Register Interface
Multiplier / Divider
Timer 0 / Timer 1
UART
ALU
Functional Description
XC87xCLM
External SFRs
V1.5, 2011-03
Internal Data
Memory
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