3.3V Neuron® Chip Network Processor
CY7C53120L8
CY7C53150L
Cypress Semiconductor Corporation
•
3901 North First Street
•
San Jose
, CA 95134
•
408-943-2600
Document #: 38-10002 Rev. *E
Revised November 2, 2004
Features
• 3.3V operation
• Three 8-bit pipelined processors for concurrent
processing of application code and network traffic
• Hardware UART/SPI interface
• Eleven-pin I/O port programmable in 38 modes for fast
application program development. I/O port is 5V input
tolerant
• Two 16-bit timer/counters for measuring and gener-
ating I/O device waveforms
• Five-pin communication port that supports direct
connect and network transceiver interfaces, and
operates at 3.3V or 5V
• Programmable pull-ups on IO4–IO7 and 20-mA sink
current on IO0–IO3
• Unique 48-bit Neuron ID number in every device to facil-
itate network installation and management
• 0.35-
µm Flash process technology
• On-chip LVD circuit with programmable trip point and
digital filter settings
• Programmable Pulse Stretching reset
• 4,096 bytes of SRAM for buffering network data,
system, and application data storage
• 2.75 KBytes (CY7C53150L), 8KBytes (CY7C53120L8) of
Flash memory with on-chip charge pump for flexible
storage of configuration data and application code
• Addresses up to 56 KBytes of external memory
(CY7C53150L)
• 16 KBytes (CY7C53120L8) of ROM containing LonTalk
network protocol firmware
• Maximum input clock operation of 20MHz over –40°C
to 85°C[1] temperature range
• 64-pin TQFP package (CY7C53150L)
• 32-pin SOIC or 44-pin TQFP package (CY7C53120L8)
Functional Description
The 3.3V Neuron chip (CY7C53120L8/3150L) is a low-power
version of the 5V Neuron chip with a number of feature
enhancements. The CY7C53120L8/3150L Neuron chip imple-
ments a device for LonWorks distributed intelligent control
networks. It incorporates, on a single chip, the necessary
communication and control functions, both in hardware and
firmware, that facilitate the design of a LonWorks device.
The CY7C53120L8/3150L supports all the functionality of the
5V CY7C531x0 Neuron chip. Additionally it features 4KBytes
of RAM, 8KBytes of Flash memory (CY7C53120L8), and
hardware UART/SPI. The CY7C53120L8/3150L has an 11-pin
configurable I/O block. The I/Os are all 5V-tolerant to allow
interfacing to TTL Compatible 5V components and microcon-
trollers.
The CY7C53120L8/3150L contains a very flexible five-pin
communication port that can be configured to interface with a
wide variety of media transceivers at a wide range of data
rates. The communication port can operate at either 3.3V or
5V. In 5V mode the communication port is completely
backward compatible with existing 5V transceivers. The most
common transceiver types are twisted-pair, powerline, RF, IR,
fiber-optics, and coaxial.
The CY7C53150L incorporates an external memory interface
that can address up to 56KBytes with 8KBytes of the address
space mapped internally. LonWorks devices that require large
application programs can take advantage of this external
memory capability.
Services at every layer of the OSI networking reference model
are implemented in the LonTalk firmware-based protocol
stored in 16KBytes ROM (CY7C53120L8), or off-chip memory
(CY7C53150L). The firmware also contains 38 prepro-
grammed I/O drivers, simplifying application programming.
The application program is stored in the Flash memory
(CY7C53120L8) and/or off-chip memory (CY7C53150L), and
may be updated by downloading over the network.
Note:
1. Maximum junction temperature is 105°C. TJunction = TAmbient + V•I•θJA. 32-pin SOIC θJA = 61.07°C/W. 44-pin TQFP θJA = 69.5°C/W. 64-pin TQFP θJA = 56.15°C/W.
Logic Block Diagram
Media Access
Control Processor
Network
Processor
Application
Processor
4KBytes RAM
Communications
Port
ROM
Internal
Data Bus
(0:7)
Address Bus
(0:15)
Internal
CP4
CP0
(CY7C53120L8)
IO10
:
IO7
IO6
:
4-pin UART/SPI
I/O Block
CLK1
CLK2
Two Timer/Counters
IO0
SERVICE
RESET
Oscillator,
Clock, and
Control
External Address and
Data Bus (CY7C53150L)
Flash
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
