Features
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Designed in Accordance with CAN Specification 2.0B
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CAN 2.0B Protocol Functions
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4 Different Data Rates Using an Internal Programmable Prescaler
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– 1 Mbit/s, 500 kbit/s, 250 kbit/s, 125 kbit/s
16 MHz Cycle Frequency
Power-down: Sleep Mode
CAN Bus Line Arbitration
All Required CAN Functions:
Error Handling:
– Stuff Bit Generation
– CRC Generation
– Acknowledge Generation
– Remote Frame
1 TX Buffer and 3 RX Buffer
3 Individual Acceptance Filtering
Interrupt Outputs Can be Generated for the Following Events
– Telegram Sent Successfully
– Telegram Received Successfully
– Receive Buffer Overflow
– Bus Off Condition
– Error Passive Condition
Technology: Atmel MG2RTP Radiation Hardened Sea of Gate 0.5 um
Type: Semi-Custom Digital 5V
Operating Frequency: 16 MHz (Test Frequency is 10MHz)
Maximum Frequency: 18 MHz
No Single Event Latch-up below a LET Threshold of 80 MeV/mg/cm
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Tested up to a Total Dose of 300 Krads(si) According to MIL STD 883 Method 1019
QML-Q and V with SMD 5962-03A06
Package: MLCC 44 pins
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CAN Controller
for Space
Application
AT7908E
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Description
The AT7908E is a CAN controller stand-alone device for space application. Redun-
dant structures and special techniques are implemented in order to make the device
SEU tolerant. The AT7908E CAN core provides all CAN 2.0B protocol functions
except the overload frame generation. It includes the acceptance filtering. The core
incorporates error-handling capabilities, the stuff bit generation, CRC, multiple sample
points and remote frame generation. The AT7908E provides a programmable MCU 8-
bit general-purpose interface to connect receive and transmit buffer, control register
and status register to CPU.
The AT7908E was designed by Aurelia Microelettronica S.p.A., Italy, and the chip is
known as CASA (CAN ASIC for Space Application).
4268D–AERO–11/09
1
ATMEL [ ATMEL CORPORATION ]
