Features: User ROM/OTP/EPROM: up to 60 Kbytes
Data RAM: up to 1 Kbytes (256 bytes stack)
8 MH z Internal Clock Frequency in fast mode,
4 MHz in normal mode
Run and Wait CPU modes
System protection against illegal address jumps
and illegal opcode execution
Sync Processor for Mode Recognition, power
management and composite video blanking,
clamping and free-running frequency
generation
Corrector mode
Analyzer mode
USB (Universal Serial Bus) for monitor function1
Three endpoints
Integrated 3.3V voltage regulator
Transceiver
Suspend and Resume operations
Timing Measurement Unit (TMU) for
autoposition and autosize 1
Fast I2C Single Master Interface
DDC Bus Interface with:
DDC1/2B protocol implemented in hardware
Programmable DDC CI modes
Enhanced DDC (EDDC) address decoding
31 I/O lines
2 lines programmable as interrupt inputs
16-bit timer with 2 input captures and 2 output
compare functions
8-bit Analog to Digital Converter with 4 channels
on port B
8 10-bit PWM/BRM Digital to Analog outputs
Master Reset and Low Voltage Detector (LVD)
reset
Programmable Watchdog for system reliability
Fully static operation
63 basic instructions / 17 main addressing
modes
8x8 unsigned multiply instruction
True bit manipulation
Complete development support on PC/DOS-
Windows: Real-Time Emulator, EPROM
Programming Board and Gang Programmer
Full software package (assembler, linker, C-
compiler, source level debugger)
Pinout
RESET: :Bidirectional. This active low signal forces the initialization of the MCU. This event is the top priority non maskable interrupt. This pin is switched low when the Watchdog has triggered orVDD is low. It can be used to reset external
peripherals.
OSCIN/OSCOUT: Input/Output Oscillator pin.These pins connect a parallel-resonant crystal, or an external source to the on-chip oscillator.
TEST/VPP: Input. EPROM programming voltage. This pin must be held low during normal operating modes.
VDD: Power supply voltage (4.0V-5.5V)
VSS: Digital Ground.
Alternate Functions: several pins of the I/O ports assume software programmable alternate functions as shown in the pin description
Specifications
|
Symbol |
Ratings |
Value |
Unit |
|
VDD |
Recommended Supply Voltage |
-0.3 to +6.0 |
V |
|
VIN |
Input Voltage |
VSS -0.3 to VDD + 0.3 |
V |
|
VAIN |
Analog Input Voltage (A/D Converter) |
VSS -0.3 to VDD + 0.3 |
V |
|
VOUT |
Output Voltage |
VSS -0.3 to VDD + 0.3 |
V |
|
IIN |
Input Current |
-10......+10 |
mA |
|
IOUT |
Output Current |
-10......+10 |
mA |
|
IINJ |
Accumulated injected current of all I/O pins (VDD, VSS)
|
40 |
mA |
|
TA |
Operating Temperature Range |
0 to +70 |
°C |
|
TSTG |
Storage Temperature Range |
-65 to +150 |
°C |
|
TJ |
Junction Temperature |
150 |
°C |
|
PD |
Power Dissipation |
TBD |
mW |
|
ESD |
ESD susceptibility |
2000 |
V |
DescriptionThe ST72774, ST72754 and ST72734 are HCMOS microcontroller units (MCU) from the ST727x4 family with dedicated peripherals for Monitor applications.
They are based around an industry standard 8-bit core and offer an enhanced instruction set. The processor runs with an external clock at 12 or 24 MHz with a 5V supply. Due to the fully static design of this device, operation down to DC is possible. Under software control the ST72754 can be placed in WAIT mode thus reducing power consumption. The HALT mode is no longer available.
The enhanced instruction set and addressing modes afford real programming potential. Illegal opcodes are patched and lead to a reset.
In addition to standard 8-bit data management the ST72754 features true bit manipulation, 8x8 unsigned multiplication and indirect addressing modes.
The ST72754 includes an on-chip oscillator, CPU, System protection against illegal address jumps, Sync Processor for video timing & Vfback analysis,up to 60K Program Memory, up to 1K RAM, USB/DMA, a Timing Measurement Unit, I/O, a timer with 2 input captures and 2 output compares, a 4 channel Analog to Digital Converter, DDC, I2C Single Master, Watchdog Reset, and eight 10-bit PWM/BRM outputs for analog DC control of external functions.
ST72754 Data Sheet
