ST9293 ST Microelectronics, ST9293 Datasheet - Page 2

• Manufacturer Part Number: ST9293
• Description: 48K ROM HCMOS MCUs WITH ON SCREEN DISPLAY AND A/D CONVERTER
• Manufacturer: ST Microelectronics

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, I
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
Figure 1-1. ST9293 Block Diagram
2/4
16 to 48k x 8
I/O PORT 0
ROM
8
2
C-bus and IM-bus Interface, plus two
J7
J5
J3
J1
ROM
48K
32K
24K
16K
RAM
MEMORY BUS ( Address & Data )
768
640
512
256
256 to 768
I/O PORT 2
RAM
( SPI )
8
VSYNC
REGISTER FILE
ON SCREEN
256 Bytes
REGISTER BUS ( Address & Data )
DISPLAY
HSYNC
PLL
PLLF
PLLR
AV
D D
I/O PORT 3
16-Bit TIMER / WATCHDOG + SPI
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 5.5 s
conversion time and 6-bit guaranteed resolution.
5
CPU
CONVERTER
A / D
( Analog Inputs )
I/O PORT 4
3
TIMER
SLICE
( Control Bus )
I/O PORT 5
VR0B1749
( Colour )
7