ST9293J3 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
ST9293J3 Datasheet PDF : 4 Pages
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ST9293
1.1GENERAL DESCRIPTION
The ST9293 is a ROM member of the ST9 family of
microcontrollers, completely developed and pro-
duced by SGS-THOMSON Microelectronics using
a proprietary n-well HCMOS process.
The ROM parts are fully compatible with their
EPROM versions, which may be used for the pro-
totyping and pre-production phases of develop-
ment, and can be configured as standalone
microcontrollers with 48K/32K/24K/16 bytes of on-
chip ROM.
The nucleus of the ST9293 is the advanced Core
which includes the Central Processing Unit (CPU),
the Register File, a 16-bit Timer/Watchdog with 8-
bit Prescaler, a Serial Peripheral Interface support-
ing S-bus, I2C-bus and IM-bus Interface, plus two
8-bit I/O ports. The Core has independent memory
and register buses allowing a high degree of pipe-
lining to add to the efficiency of the code execution
speed of the extensive instruction set.The powerful
I/O capabilities demanded by microcontroller appli-
cations are fulfilled by the ST9293 with up to 31/41
I/O lines dedicated to digital Input/Output.
These lines are grouped into up to six I/O Ports and
can be configured on a bit basis under software
control to provide timing, status signals, timer in-
puts and outputs, analog inputs, external interrupts
and serial or parallel I/O.
Three basic memory spaces are available to sup-
port this wide range of configurations: Program
Memory, Data Memory and the Register File,
which includes the control and status registers of
the on-chip peripherals.
The 16-bit Slice Timer with an 8-bit Prescaler and 6
operating modes allows simple use for wavefor-
mgeneration and measurement, PWM functions
and many other system timing functions.
The human interface is provided by the On Screen
Display module, this can produce up to 8 lines of of
up to 34 characters from a ROM defined 128 char-
acter set. The 9x13 character can be modified by 4
different pixel sizes, with character rounding, and
formed into words with colour and format attrib-
utes.
In addition there is a 4 channel Analog to Digital
Converter with integral sample and hold, fast 5.5µs
conversion time and 6-bit guaranteed resolution.
Figure 1-1. ST9293 Block Diagram
16 to 48k x 8
ROM
ROM RAM
J7 48K 768
J5 32K 640
J3 24K 512
J1 16K 256
256 to 768
RAM
256 Bytes
REGISTER FILE
16-Bit TIMER / WATCHDOG + SPI
CPU
MEMORY BUS ( Address & Data )
REGISTER BUS ( Address & Data )
SLICE
TIMER
I/O PORT 0
8
I/O PORT 2
( SPI )
8
ON SCREEN
D I S P L AY
I/O PORT 3
A/D
CONVERTER
I/O PORT 4
( Analog Inputs )
PLL
5
3
VSYNC HSYNC AVDD
PLLR
PLLF
I/O PORT 5
( Control Bus )
( Colour )
7
VR0B1749
2/4
®
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