An overview of the processor cores available from CAST, including the 32-bit BA2x Family, a range of 8051s, and several legacy processors.

1. 8-bit to 32-bit Processor and
Microcontroller IP from CAST
Nikos Zervas
COO
November 2013

2. Processors & Controllers Today
2.25
processors/design
avg. for ICs
79% of ICs,
56% of FPGAs
have multiple processors
32-bit Processors
Applications demand it
avg. in ICs over 20M gates
8-bit Controllers
8051 still key
Touch, sensors, video, etc.
Low-power essential
Single supplier dominates
But is it your best choice?
5.48
processors/design
Proven, easy, 8-bit MCU
Small, fast, low-power
Ideal for many embedded
systems, subsystem
controllers, Big-Little SoCs
We will show that CAST is:
The smart alternative for 32-bit MPUs
The best source of 8051 MCUs
Slide 2
8051s and Beyond
Stats from
2012 Wilson
Research Group
Functional
Verification Study

3. MPU and MCU IP from CAST
8051 Compatibles
All
Fast, modern 8-bit compatible
core for the most widely used 8bit MCU
BA2 Embedded System &
Application Processors
32bit ISA
Range from deeply embedded to
full application processors
Legacy Processors
Replacing obsolete parts, extend
existing systems, or reuse proven
code
Slide 3
8051s and Beyond
Royalty-free and
competitively priced
Pre-integrated peripheral
options for MCUs and
Platforms
Complete IDEs and
powerful debugging tools
Dev kit
board
packages
for hands-on
evaluation
CAST’s 14 years of IP
experience and unmatched
customer support

4. Why an 8051?
Flash-based
Devices
Well-established, wellsupported instruction set
Audio
Automotive
Consumer
Devices
Small size, low power, and
adequate powerful for many
applications
Royalty-free
Communication
R8051XC/2
Much reusable legacy code
available
Modern tools for SW
development and on-chip
debug
Less integration complexity
Vibrant
Markets
Industrial Control
Video
T8051
Mixed Signal ICs
Example App: FSM Replacement
On-Chip
NOR-FLASH
T8051
External
Memory
Firmware storage
SFR
Data
Port0
Control
int1
Data
Memory
Measured
Signal
int0
External
Memory
On-Chip
IRAM
ADC
Hardwired
DSP
Slide 4
8051s and Beyond
Serial
Port 1
Host
OCDS
Stack & Variables
JTAG

5. Why a CAST 8051?
Partner with the most experienced,
most successful 8051 provider
14 years selling & supporting 8051s
Mature, proven, multi-generation designs
Shipping in hundreds of customer products
Configure to meet different project requirements
Optional bundled peripherals
Easy, error-free automatic RTL and test-bench configuration
Royalty-free, cost-competitive licensing
Enjoy easy development and verification
Seamless interface to Keil 8051 software dev tools
Native EASE embedded software debugging package
Software stacks for CAST IP and ready-to-use platforms
Slide 5
8051s and Beyond

6. Migration Dilemma:
Switch from 8051 to 32-bit?
8051 is familiar, efficient and affordable, but:
Its processing power is marginal for some modern systems
Better code density will significantly reduce memory cost, the dominant
expense in many chips
Software teams would rather avoid writing code for an 8-bit CPU
The 8051 is just too slow to transfer or perform computations on the
32- or 64-bit data typical today
The data volume of many apps is beyond the 8051’s capabilities
More and more systems need to run an OS and use common AHB
peripherals
Yet 32-bit processors have much bigger requirements:
They can use significantly more silicon and power
They can be tremendously more expensive, esp. with royalties
Slide 6
8051s and Beyond

7. Migration Solution:
32-bit BA2x Processor Family
Implements the powerful BA2 ISA on highly efficient
hardware architectures, offering:
Extreme Code Density
High Performance
Energy Efficiency
Example of BA2 ISA code savings
Proven, mature, IP products with major advantages:
Easy Software Development with Free Tools
Customizable Configurations and Platforms for
Rapid System Integration
Better Business Terms including No Royalties
The ease & efficiency of 8051s,
the power and capability of 32-bits
Slide 7
8051s and Beyond

8. BA2x Family Processors
1H’14
AREA
BA28
High Performance
Application uP
BA25
High Performance
Application uP
BA22-xx
NEW
BA21
Deeply Embedded uP
From 10k and up to
200 Coremarks on 65nmLP
v
From 150k and upto
1,600 Coremarks on 65nmLP
Deeply Embedded to
Application uP
From 15k and upto
1,000 Coremarks on 65nmLP
PERFORMANCE
Slide 8
8051s and Beyond

9. BA2x – Consider the Benefits
Low Area and Power
Integrated Peripherals
From 10K gates &
0.05 mW/MHz on 90nm
PIC allows deterministic and lowlatency interrupt response
Extreme code density for systemwide energy savings
PMU minimizes power
Optimized mix of 16-, 24-, 32-, & 48-bit
instructions
Minimizing instruction memory area and
power usage
Advanced power management for
further power reduction
DBGU for JTAG debug
Easy SW Development
Complete IDE under Eclipse
Architectural Simulator
OS, RTOS, & embedded C/C++
libraries support
9 Slide 9
8051s and Beyond

10. BA2x – Consider More Benefits
Unique Business Terms
Ready for SoC Integration
Single, multi or unlimited use
license with no royalties
Offered with your choice of preintegrated peripherals
Competitive pricing with no
hidden extra charges
Zero Risk
Production proven in high-volume
consumer devices
24/7 support by CAST
Access to IP developers at
Beyond Semiconductor
Slide 10
10
8051s and Beyond

11. Features
BA2 Variable Length ISA
Pipeline Stages
Out of Order Completion
Branch Prediction Unit
Memory Protection Unit
Number of GPRs
SoC Data Bus
SoC Instruction Bus
Hardware Multiplier and/or Divider
Multiply-Accumulate Unit
Floating Point Unit
DSP Extensions Acceleration
JTAG Debug Support
Embedded Tick Timer, PIC, and PMU
Vectored Interrupt Controller
Tightly Coupled I/D Busses
Instr. & Data Caches
Instr. & Data MMU
Configurable Peripherals Platform
Beyond Studio SW IDE and gcc SDK
DMIPS/MHz
Coremarks / MHz
FMAX @ TSMC65LP
Eq. Gates5
BA21
Ultra Low
Power
BA22-DE
Deeply
Embedded
BA22-RT
Real Time
Embedded
BA22-AP
Application
Processor
BA25
Adv. Application
Processor
2
4/5
5
5
71 / 12
2
12-32
AXI4 Lite
AXI4 Lite
16-32
16-32
32
AHB/Wishbone AHB/Wishbone AHB/Wishbone
AHB/Wishbone AHB/Wishbone AHB/Wishbone
32
AXI4
AXI4
2
(L0/L1)
1.83
2.53
125 MHz3
10k3
= Supported
Notes: 1: Minimum for simple ALU instructions.
3: Preliminary characterization data
5. Approximate size estimate for area-optimized design
Slide 11
2
1.74
2.442
400 MHz
25k
1.7
2.44
400 MHz
15k
= Optional
1.74
2.442
400 MHz
35k
1.5
2.1
800 MHz
150k
= Not Supported
2: Feature can be made available up on request
4. DMIPS rating for code running from tightly-coupled memories.
8051s and Beyond

12. Legacy Processors for Obsolete
Chip Replacement
Pin-compatible RTL or netlist cores
Extend the life of older systems
Build new or extended systems around
existing legacy code with modern tools
Customer Application
Pharmaceutical
printer supplier
HAPA used the C68000 in a
replacement board that is
dramatically more compact
and less expensive to produce than the original.
Slide 12
8051s and Beyond
Z80 CPU
6502
65C02
68000
68000
for AHB
80186XL
80186EC
80188EC
80251
387L math

13. Why Consider IP from CAST?
Competitive technical features
Extreme Code-Density
High Performance
Energy Efficiency
Fast time-to-market
Complete processor ecosystems for easy software
development and rapid SoC integration
Design-for-Reuse productization plus Pre- and Post-Sales
Support from the longest-running IP team in the industry
Business terms that work better for you
Production-proven & low-risk
Flexible licensing with or without royalties
Slide 13
8051s and Beyond

14. A Suggestion:
Don’t Believe Us!
Get our software tools, compile and simulate
your code, and then measure code size and
performance on your own (or just ask us).
Let us know your process node, libraries, and
target frequency and we will work together
on area and power characterization.
Do the same with the competition
(if they are willing).
Slide 14
8051s and Beyond