The Motorola PowerPC 603e microprocessor (MPC603e) is a low-power implementation of the PowerPC
Reduced Instruction Set Computer (RISC) architecture. The PowerPC 603e microprocessor offers workstation-
level performance packed into a low-power, low-cost design ideal for desktop computers, notebooks and bat-
tery-powered systems, as well as printer and imaging equipment, telecommunications systems, networking and
communications infrastructure, industrial controls, and home entertainment and educational devices.
Industrial-grade, extended temperature PowerPC 603e microprocessors are available for harsh operating
environments. The PowerPC 603e microprocessor is software- and bus-compatible with the PowerPC 740,
PowerPC 750, and MPC7400 microprocessor families.
Superscalar Microprocessor
The PowerPC 603e microprocessor is a superscalar design
capable of issuing three instructions per clock cycle into five
independent execution units, including:
I
Integer unit
I
Load/Store unit
I
Floating-point unit
I
System register unit
I
Branch processing unit
The ability to execute multiple instructions in parallel, to
pipeline instructions, and the use of simple instructions with
rapid execution times yields maximum efficiency and throughput
for PowerPC 603e systems.
Product Highlights
The PowerPC 603e microprocessor features a low-power
2.5-volt or 3.3-volt design with three power-saving
modes—doze, nap and sleep. These user-programmable
modes progressively reduce the power drawn by the
processor. The PowerPC 603e microprocessor also uses
dynamic power management to selectively activate func-
tional units as they are needed by the executing instruc-
tions. Unused functional units enter a low-power state
automatically without affecting performance, software
execution, or external hardware.
PPC603EFACT/D
REV. 7
System Register
Unit
32b
Address
32b/64b
Data
MMU
Bus Interface Unit
System Bus
Integer
Unit
Floating Point
Unit
Inst. Cache
MMU
Data Cache
Load/Store
Unit
Instruction
Unit
Branch Processing
Unit
PowerPC 603e Microprocessor
Block Diagram
Fact Sheet
M OTOROLA P OWER PC 603e
M ICROPROCESSOR
Motorola PowerPC
603e Microprocessor