(Hong Kong)
Product Summary
The P89C557E4EFB is a single-chip 8-bit microcontroller manufactured in an advanced CMOS process. It is a derivative of the 80C51 microcontroller family. The P89C557E4EFB has the same instruction set as the 80C51. The P89C557E4EFB contains a non-volatile 32 Kbytes mask programmable ROM, a volatile 1024 × 8 read/write data memory, five 8-bit I/O ports, one 8-bit input port, two 16-bit timer/event counters (identical to the timers of the 80C51), an additional 16-bit timer coupled to capture and compare latches, a 15-source, two-priority-level, nested interrupt structure, an 8-input ADC, a dual DAC pulse width modulated interface, two serial interfaces (UART and I2C-bus), a watchdog timer, an on-chip oscillator and timing circuits.
Parametrics
P89C557E4EFB absolute maximum ratings: (1)Storage temperature range: –65 to +150℃; (2)Voltage on VDD to VSS and SCL, SDA to VSS: –0.5 to +6.5 V; (3)Input / output current on any I/O pin: 10 mA; (4)Power dissipation (based on package heat transfer limitations, not device power consumption): 1.0 W.
Features
P89C557E4EFB features: (1)80C51 central processing unit; (2)32 K × 8 ROM respectively FEEPROM (Flash-EEPROM),; (3)expandable externally to 64 Kbytes ROM/FEEPROM Code protection; (4)1024 × 8 RAM, expandable externally to 64 Kbytes; (5)Two standard 16-bit timer/counters; (6)An additional 16-bit timer/counter coupled to four capture registers and three compare registers; (7)A 10-bit ADC with eight multiplexed analog inputs and programmable autoscan; (8)Two 8-bit resolution, pulse width modulation outputs; (9)Five 8-bit I/O ports plus one 8-bit input port shared with analog inputs; (10)I2C-bus serial I/O port with byte oriented master and slave functions; (11)Full-duplex UART compatible with the standard 80C51; (12)On-chip watchdog timer; (13)15 interrupt sources with 2 priority levels (2 to 6 external sources possible); (14)Extended temperature range (–40 to +85℃).
Diagrams
