Universum FT-81031, Руководство по обслуживанию

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- Two 16 bit timers, Watchdog timer
- PWM unit (2 channels 14 bit, 6 channels 8 bit)
- ADC (4 channels, 8 bit), UART
- I
2
C interface
n Memory
- Non-multiplexed 8-bit data and 16 (up to 20) bit address bus
- Memory banking up to 1Mbyte
- Eight 16 bit data pointer registers (DPTR)
- 256 bytes on-chip internal RAM
- 128 bytes extended stack memory
- 16 Kbytes Extended RAM for Display Memory
n Display
- ROM character set supports all East/West European Languages
- Parallel display attributes
- Single/Double Width/Height of characters
- Variable flash rate
- Programmable screen size
- Up to 16 colours per DRCS character
- Shadowing
- Support of Progressive Scan and 100Hz
- Contrast Reduction
n Ports
- One 8 bit I/O port with open drain output and optional I
2
C Bus emulation support (Port 1)
- Two 8 bit multifunction I/O ports (Port1, Port3)
- One 4 bit port operating as digital or analog inputs for ADC (Port 2)
- One 2 bit I/O port with secondary functions (P4.2, 4.3, 4.7)
- One 4 bit I/O port with secondary functions (P4.0, 4.1, 4.4)
SERIAL ACCESS 32K EEPROM (24LC32-W)
It is the 32Kbit electrically erasable programmable memory. The memory is compatible with the I2C standard,
two wire serial interface, which uses a bi-directional data bus and serial clock.
Features:
n Single supply with 3.3V (operation down to 2.5V)
n Compatible with I2C extended addressing
n 2-wire I2C serial interface supports 100kHz protocol
n Self-timed ERASE and WRITE cycles
n Power on/off data protection circuitry
n Hardware write protect
n 1,000,000 Erase/Write cycles guaranteed
n 32-byte page or byte writes modes available
n Schmidt trigger filtered inputs for noise suppression
n Output slope control to eliminate ground bounce
n 2 ms typical write cycle time, byte or page
n Electrostatic discharge protection > 4000V
n Data retention > 200 years
n 8-pin PDIP and SOIC packages
Pinning:
1. E0 User Configurable Chip Select
2. E1 User Configurable Chip Select
3. E2 User Configurable Chip Select
4. Vss Ground
5. SDA Serial Address/Data I/O
6. SCL Serial Clock
7. WC Write Protect Input
8. Vcc +2.5V to 6.0V Power Supply