April 1998
1/3
This is preliminary information on a new product in development or undergoing evaluation. Details are subject to change without notice.
R
ST7275-1
8-BIT, 56-PIN MCU FOR MONITORS, WITH UP TO 60K ROM, 2K
RAM, ADC, TIMER, IR, SYNC, PWM/BRM, DDC/DMA, I
2
C & SCI
PRODUCT PREVIEW
I
User ROM/OTP/EPROM: up to 60 Kbytes
I
Data RAM: up to 2 Kbytes (256 bytes stack)
I
8 MHz Maximum Internal Clock Frequency in
fast mode, 4 MHz in normal mode
I
Run, Wait and Halt CPU modes
I
Sync Processor for Mode Recognition, power
management and composite video blanking,
clamping
and
free-running
generation.
– Corrector mode
– Analyzer mode
I
Fast I
2
C Multi Master Interface
I
DDC Bus Interface
fully compliant with DDC1,
2B, 2B+, 2AB, 2Bi standards
I
32 I/O lines
– 8 Open Drain I/Os with high current capacity
(10 mA) on port A
– 5 lines programmable as interrupt inputs
I
16-bit timer with 2 input captures and 2 output
compare functions (with 1 output pin)
I
8-bit Analog to Digital Converter with 8
channels on port B
I
8 10-bit PWM/BRM Digital to Analog outputs
I
One 12-bit PWM/BRM Digital to Analog output
I
Asynchronous
Serial
Interface
I
Infra red controller
I
Master Reset and Power on/off reset
1
I
Programmable Watchdog for system reliability
I
56-pin Shrink Dual In line Plastic package
I
Fully static operation
I
0 to + 70
o
C operating temperature range
I
4.0V to 5.5V supply operating range
I
24 MHz Quartz Oscillator
I
63 basic instructions/17 main address modes
I
8x8 unsigned multiply instruction
I
True bit manipulation
I
Versatile Development Tools (DOS and
Windows) including assembler, linker, C-
compiler, archiver, source level debugger,
EPROM programmer and hardware emulator
frequency
Communications
Device Summary
Note 1
: Power On/Off reset not implemented in
this revision.
Features
ROM
(bytes)
RAM
(bytes)
ADC
Timer
I
2
C Bus
DDC/DMA
Sync
PWM
I/O
SCI
IR
EPROM
Device
OTP
Device
ST72751N9
ST72751N7
ST72751N6
60K
48K
32K
2K
1.5
1
8 channels
1
one multimaster
yes
yes
9
32
yes
yes
ST72E751N9D1
ST72T751N9B1
PSDIP56
See Ordering Information at the end of the Document
1