SAB80C166-M # 16-Bit CMOS Single - Chip Microcontroller Infineon brand Technologies AG High Performance
Parameters Introduce :
● High Performance 16-bit CPU with 4-Stage Pipeline
● 100 ns Instruction Cycle Time at 20 MHz CPU Clock
● 500 ns Multiplication (16 × 16 bit), 1 µs Division (32 / 16 bit)
● Enhanced Boolean Bit Manipulation Facilities
● Register-Based Design with Multiple Variable Register Banks
● Single-Cycle Context Switching Support
● Up to 256 KBytes Linear Address Space for Code and Data
● 1 KByte On-Chip RAM
● 32 KBytes On-Chip ROM (SAB 83C166 only)
● Programmable External Bus Characteristics for Different Address Ranges
● 8-Bit or 16-Bit External Data Bus
● Multiplexed or Demultiplexed External Address/Data Buses
● Hold and Hold-Acknowledge Bus Arbitration Support
● 512 Bytes On-Chip Special Function Register Area
● Idle and Power Down Modes
● 8-Channel Interrupt-Driven Single-Cycle Data Transfer Facilities via Peripheral Event
● 16-Priority-Level Interrupt System
● 10-Channel 10-bit A/D Converter with 9.7 µs Conversion Time
● 16-Channel Capture/Compare Unit
● Two Multi-Functional General Purpose Timer Units with 5 Timers
● Two Serial Channels (USARTs)
● Programmable Watchdog Timer
● Up to 76 General Purpose I/O Lines
● Supported by a Wealth of Development Tools like C-Compilers, Macro-Assembler Packages,
Emulators, Evaluation Boards, HLL-Debuggers, Simulators, Logic Analyzer Disassemblers,
● On-Chip Bootstrap Loader
● 100-Pin Plastic MQFP Package (EIAJ)
The architecture of the SAB 80C166 combines advantages of both RISC and CISC processors and
of advanced peripheral subsystems in a very well-balanced way. The following block diagram gives
an overview of the different on-chip components and of the advanced, high bandwidth internal bus
structure of the SAB 80C166.
Note: All time specifications refer to a CPU clock of 20 MHz (see definition in the AC Characteristics section)
The memory space of the SAB 80C166 is configured in a Von Neumann architecture which means
that code memory, data memory, registers and I/O ports are organized within the same linear
address space which includes 256 KBytes. Address space expansion to 16 MBytes is provided for
future versions. The entire memory space can be accessed bytewise or wordwise. Particular
portions of the on-chip memory have additionally been made directly bit addressable.
The SAB 83C166 contains 32 KBytes of on-chip mask-programmable ROM for code or constant
data. The ROM can be mapped to either segment 0 or segment 1.
1 KByte of on-chip RAM is provided as a storage for user defined variables, for the system stack,
general purpose register banks and even for code. A register bank can consist of up to 16 wordwide
(R0 to R15) and/or bytewide (RL0, RH0, …, RL7, RH7) so-called General Purpose Registers (GPRs).
512 bytes of the address space are reserved for the Special Function Register area. SFRs are
wordwide registers which are used for controlling and monitoring functions of the different on-chip
units. 98 SFRs are currently implemented. Unused SFR addresses are reserved for future
members of the SAB 80C166 family.
In order to meet the needs of designs where more memory is required than is provided on chip, up
to 256 KBytes of external RAM and/or ROM can be connected to the microcontroller.
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