| 1-4 Processors |
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Most of these products also have the J-TAG H-UDI for debugging.
These products have the SH-3 CPU core using 68 basic instructions and
on-chip MMU. They are used in wireless LANs and in mobile information
devices.
For example, the SH7705 operates at 133MHz and has an on-chip 32K-byte
cache. It features on-chip peripherals such as USB functions, synchronous
DRAM interface functions, 32-bit timer, 10-bit A/D converter and 64-byte
FIFO serial ports.
These products have the SH3-DSP CPU core, which is an enhanced version
of the SH-3 with the additional function to repeat multiplication-accumulation
per clock cycle. They are used in high performance printers and FAX machines.
For example, the SH7720 operates at a speed of 133MHz and has an on-chip
32-byte cache.
In addition to the on-chip functions found in the SH7705, this chip features
on-chip peripherals such as a large LCD controller, USB host controller,
all types of card interface and a 12C bus interface.
These are products with the SH-4 CPU core use Harvard architecture and
2-way superscalar. It has an FPU capable of double-precision and vector
operations, and it is used in Car Information System such as car navigation
systems.
For example, the SH7751R operates at 240MHz, has a 16K-byte instruction
cache and a 32K-byte data cache. It has on-chip PCI controller to connect
to all types of PC cards and peripheral LSIs.
The SuperH Processor family evolves into the SH-4A.
The SH-4A operates at 400MHz, employs 2-way superscalar and Harvard architecture
and boasts a Dhrystone performance of 720 MIPS.