sta8088ex STMicroelectronics, sta8088ex Datasheet - Page 19

• Manufacturer Part Number: sta8088ex
• Description: High Flexible Gps/galileo/glonass/qzss Receiver With Powerful Processing Arm9
• Manufacturer: STMicroelectronics

STA8088EX
3.4
3.4.1
3.4.2
SQI Flash interface
STA8088EX includes a high-performance interface to Serial Quad Interface (SQI) serial
NOR Flash chips, to support a low-cost simple implementation. A proprietary code prefect
and data write buffer architecture is provided to allow transparent read access to Serial NOR
as if it was memory mapped fetchable code. The presence of L1 Instruction cache and the
ability to allocate critical sections in zero-wait state TCMs minimizes the access latency of
this solution.
APB peripherals
CAN
The 2 CAN cores perform communication according to the CAN protocol version 2.0 part A
and B. The bit rate can be programmed to values up to 1 MBit/s. For the connection to the
physical layer, additional transceiver hardware is required.
CAN consists of the CAN core, message RAM, message handler, control registers and
module. For communication on a CAN network, individual message objects are configured.
The message objects and identifier masks for acceptance filtering of received messages
that are stored in the message RAM. All functions concerning the handling of messages are
implemented in the message handler. These functions include acceptance filtering, the
transfer of messages between the CAN core and the message RAM, and the handling of
transmission requests as well as the generation of the module interrupt.
The register set of the CAN can be accessed directly by the CPU through the module
interface. These registers are used to control/configure the CAN core and the message
handler and to access the message RAM.
CAN features
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EFT
The Extended Function Timer (EFT) consists of a 16-bit counter driven by a programmable
prescaler.
It may be used for a variety of purposes, including pulse length measurement of up to two
input signals (input capture) or generation of up to two output waveforms (output compare
and PWM). Pulse lengths and waveform periods can be modulated from a very wide range
using the timer prescaler.
Supports CAN protocol version 2.0 part A and B
Bit rates up to 1 MBit/s
32 message objects
Each message object has its own identifier mask
Programmable FIFO mode (concatenation of message objects)
Maskable interrupt
Disabled automatic re-transmission mode for time triggered CAN applications
Programmable loop-back mode for self-test operation
8-bit non-multiplex Motorola HC08 compatible module interface
Two 16-bit module interfaces to the AMBA APB bus from ARM
Doc ID 18357 Rev 1
General description
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