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Tokyo, June 14, 2001 -- Hitachi, Ltd. (TSE: 6501) today announced,
as an addition to the H8S/2200 Series of low-power 16-bit microcontrollers,
the H8S/2268F F-ZTATTM*1
microcontroller featuring an on-chip LCD controller/driver and DTMF
output*2 circuit, plus 256-Kbyte
on-chip flash memory.
Sample shipments will begin in September 2001 in Japan.
With an on-chip segment-type LCD controller or sine-wave generating
DTMF output circuit, the H8S/2268F is suitable for use in such products
as electric power meters and wireless equipment. In addition to enabling
systems to be made smaller while providing higher functionality through
high-performance 16-bit microcontroller control and a variety of peripheral
functions, the H8S/2268F also includes on-chip flash memory that allows
shorter system development times to be achieved.
By incorporating a variety of functions in one chip, a single-chip
microcontroller enables end-products to be made smaller and at lower
cost, and for this reason they are used for control of various kinds
of devices. However, as such devices become functionally more sophisticated
year by year, there is a move away from control by 8-bit microcontrollers
to control by 16-bit models to handle this higher functionality. In
line with this trend, the functions previously provided in 8-bit microcontrollers
have also become necessary in 16-bit models. One such function in
demand is LCD display of numerals indicating the power quantity, etc.,
in devices such as electric power meters, while in the wireless device
field, for example, a numeric value may be added in the calling wave
to confirm the wireless devices that are supposed to be communicating,
and in such cases there is a need for a DTMF output function generating
sine waves at two specific frequencies corresponding to numerals.
To meet these market needs, Hitachi is releasing the H8S/2268F, as
an addition to the H8S Series of high-performance, low-power-consumption
16-bit microcontrollers, featuring an on-chip LCD controller and DTMF
output circuit, together with 256 Kbytes of flash memory.
The features of the H8S/2268F are summarized below.
< Features >
| (1) |
On-chip LCD controller/driver
The provision of an on-chip segment-type LCD controller circuit,
LCD driver, and power supply circuitry enables direct drive of
an LCD panel, using a maximum of 40 segments × 4 common lines.
In addition, an on-chip 3× step-up circuit allows LCD display
at a low voltage, and segment output pins not used for LCD drive
can be used as I/O ports in 8-pin units. |
| (2) |
On-chip DTMF output circuit
The DTMF output circuit generates sine waves at two specific frequencies
corresponding to a single numeral or symbol, using a 400 KHz clock
frequency for the reference clock. It is possible to output two
sine waves in combination, or only one or other of the two. |
| (3) |
Large 256-Kbyte on-chip flash memory
The large 256-Kbyte on-chip flash memory, using single-power-supply
programming and erasing, enables control programs and system adjustment
data to be rewritten on-board, making it possible to achieve shorter
system development times. |
| (4) |
Lower radiation noise through provision
of on-chip step-down circuit
An on-chip step-down circuit allows internal operation at a low
voltage of 3 V on a 5 V external power supply voltage, greatly
reducing the radiation noise generated by the LSI. At the same
time, a 5 V interface is provided for all I/O pins, enabling the
H8S/2268F to be used with a single 5 V power supply, and existing
5V power supply specification design resources to be used without
modification. |
The H8S/2268F also includes a rich array of peripheral functions. A
2-channel I2C bus interface and 3-channel
asynchronous serial communication interface allow communication with
devices that use different serial interface specifications, and the
comprehensive peripheral function lineup also features a variety of
time functions including a 3-channel 16-bit timer, 4-channel 8-bit timer,
4-channel 8-bit reload timer, a 2-channel watchdog timer that can be
used as a real-time clock timer, a 10-bit × 10-channel A/D converter,
8-bit × 2-channel D/A converter, and 32 KHz sub-oscillator.
The existing H8S Series C compiler, assembler, linkage editor, librarian,
simulators, debuggers, etc., can be used as a development environment,
and a variety of emulators, including the E6000 real-time emulator,
are also available as hardware support tools.
The package lineup comprises 100-pin plastic QFP and TQFP types. The
use of a TQFP package enables systems to be made significantly smaller
and thinner.
The development of a mask ROM version of the H8S/2268F is also planned
for the future, as well as models offering higher functionality to meet
evolving market needs.
| Notes: |
1. |
F-ZTAT (Flexible Zero Turn-Around Time)
is a trademark of Hitachi, Ltd. |
| |
2. |
DTMF (Dual Tone Multiple Frequency)
output: This function generates sine waves of two specific frequencies
corresponding to individual buttons, in the row (horizontal) direction
and column (vertical) direction of a matrix represented by a panel
comprising numerals and symbols (0 to 9, #, and * ) on a telephone,
for example, and outputs these sine waves in combination.
From these signals, a switching system can identify which numeral
or symbol has been pressed. |
< Typical Applications >
< Prices in Japan > (For Reference)
< Specifications >
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