Hitachi, Ltd. (TSE: 6501) today announced the H8S/2678 Series of high-speed, high-performance
F-ZTAT(TM)*1 microcomputers with large capacity 256-kbyte on-chip flash memory as top-end
models in the H8S Series for use as controllers in OA equipment and PC peripheral devices.
As the first model in the series, Hitachi is releasing the H8S/2676F featuring 18.9 MIPS
performance and a 33-Mbyte/second data transfer speed at 33 MHz operating frequency. Sample
shipments will begin in November 1999 in Japan. The H8S/2676F uses 0.35 um process and
achieves top-class performance as a 16-bit CISC microcomputer*2, enabling it to control OA
equipment such as printers and PC peripheral devices such as CD and DVD units which are
constantly reaching new levels of high performance, multifunctionality, and faster transfer of data.
Hitachi is also releasing the H8S/2312, with no on-chip flash memory, as the first model in the
low-cost H8S/2318 Series for use in PC peripheral devices such as CD and DVD units. Sample
shipments of the H8S/2312 will begin in October 1999 in Japan.
In the H8S Series, Hitachi has already released the H8S/2633 Series with comprehensive on-chip
incorporating peripheral functions such as timers, A/D and D/A converters, the H8S/2338 and
2328 Series with 256-kbyte on-chip flash memory, and the H8S/2238 Series with an on-chip
32 kHz oscillator for low-power-consumption applications.
Recently, OA equipment such as printers and copiers have been following a trend toward MFP
(Multi Function Product) implementation, and print quality has also improved significantly. In
addition, high-speed communication functions, such as an Ethernet interface and the USB
interface that allows connection of peripheral devices, have become a standard feature, bringing a
demand for higher performance and faster transfer of large size data for the LSIs used in OA
equipment and PC peripheral device controllers.
In response to this need, Hitachi has developed the H8S/2676F, offering high-speed operation,
with 33 MHz operating frequency, plus 33-Mbyte/second data transfer speed.
The following features of the H8S/2676F make it ideal for use as a controller LSI:
1. 33 MHz high-speed operation at 3.3 V
One-clock access to flash memory and RAM provides the industry's top-level performance for a
CISC microcomputer of 18.9 MIPS at 33 MHz operating frequency. Systems previously
requiring separate system control and communication control chips can now be controlled with
only a single H8S/2676F.
2. On-chip 4-channel EXDMAC*3 with 33-Mbyte/second transfer capability
The EXDMAC, with its ability to operate fully in parallel with the CPU, enables CPU processing
to be executed independently while data transfer is carried out, enabling total system performance
to be improved with a single chip.
In addition, other communication data transfer such as USB can be controlled on up to four
channels, making the H8S/2676F ideal for control of communication systems requiring multiple
transfer channels.
3. Large capacity 256-kbyte on-chip flash memory
The flash memory can store large size programs and can be programmed with a single 3.3 V
power supply.
4. On-chip bus controller allowing direct connection of various kinds of memory and fine-
tuned wait control
Interfaces supported by the bus controller include a burst ROM interface and 64-Mbit EDO
DRAM interface, and fine-tuned wait control is provided to allow for flexible I/O connection,
simplifying system design.
5. Comprehensive on-chip peripheral functions
The on-chip PLL oscillation circuit allows programmable selection of 4/2/1 multiplication factors,
enabling full operation to be achieved at a low oscillation frequency. In addition to the
EXDMAC, a conventional DMA controller and DTC*5 are also including as data transfer
functions, providing compatibility with current devices. Other standard supporting functions
include a variety of timers, A/D and D/A converters, and a serial communication interface, and 17
external interrupts are also supported as an extended function.
The H8S/2312, meanwhile, is a low-cost model with no on-chip flash memory and the minimum
necessary set of on-chip peripheral functions, and operating frequency is 25 MHz at 3.3 V power
supply voltage.
The H8S/2676F is available in a convenient 144-pin QFP package which offers a high pin count
for better pin utilization. The low-cost H8S/2312 is available in 100-pin QFP and TQFP
packages.
Notes: 1. F-ZTAT(TM) (Flexible Zero Turn-Around Time) is a trademark of Hitachi, Ltd.
2. CISC: Complex Instruction Set Computer. CISC architectures are used in the
16-bit microcomputer class.
3. EXDMAC: External Direct Memory Access Controller. A DMAC is a peripheral
function for performing data transfer, widely used in microcomputers. "External"
means to data transfer mainly on the microcomputer's external bus.
4. PLL oscillation circuit: Phase-locked loop oscillation circuit. A circuit that enables
high-speed operation by multiplying a low oscillation frequency.
5. DTC (Data Transfer Controller): A controller with the same kind of function as a
DMAC, but slower than a DMAC. A DMAC is mainly used for applications
requiring high-speed transfer of large quantities of data, whereas the strong point
of the DTC is random transfer of small quantities of data.
< Typical Applications >
Copiers, printers, and similar OA equipments and MFP devices
PC peripheral devices such as CD and DVD units
Other products in the communication field
< Prices in Japan > (For Reference Only)
Product Code Package Sample Price (Yen)
H8S/2676F HD64F2676VFC QFP-144 2,700
H8S/2312 HD6412312VTE TQFP-100 950
HD6412312VF QFP-100 850
< Development Environment >
The existing H8S Series C compiler, assembler, linkage editor, librarian, simulators, debuggers,
etc., can be used as the user software development environment on widely used personal
computers and workstations. In addition, a variety of emulators, including the E6000 realtime
emulator, are available as hardware support tools.
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