80C51 8Bit microcontroller – 6 clock operation 16K/512 OTP/ROM/ROMless, 7Channel 10Bit A/D, I2C, PWM, capture/compare, high I/O, 64L LQFP
DESCRIPTION
This data sheet describes the 6 clock version of the 8xC554. This device is only available in 64L LQFP. The 8xC554 Single-Chip 8-Bit Microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family. The 87C554 has the same instruction set as the 80C51. Three versions of the
derivative exist:
•83C554—16k bytes ROM
•80C554—ROMless version
•87C554—16k bytes EPROM
FEATURES
•80C51 central processing unit
•16k ×8 EPROM expandable externally to 64k bytes
•An additional 16-bit timer/counter coupled to four capture registers and three compare registers
•Two standard 16-bit timer/counters
•512 ×8 RAM, expandable externally to 64k bytes
•Capable of producing eight synchronized, timed outputs
•A 10-bit ADC with seven multiplexed analog inputs
•Fast 8-bit ADC option – 9 µS at 16 MHz
•Two 8-bit resolution, pulse width modulation outputs
•Five 8-bit I/O ports plus one 8-bit input port shared with analog inputs
•I2C-bus serial I/O port with byte oriented master and slave functions
•On-chip watchdog timer
•Extended temperature ranges
•Full static operation – 0 to 16 MHz
•Operating voltage range: 2.7 V to 5.5 V 0 to 8 MHz and 4.5 V to 5.5 V 8 to 16 MHz commercial temperature
•Security bits:
– ROM – 2 bits
– OTP/EPROM – 3 bits
•4 level priority interrupt
•15 interrupt sources
•Full-duplex enhanced UART
– Framing error detection
– Automatic address recognition
•Power control modes
– Clock can be stopped and resumed
– Idle mode
– Power down mode
•Second DPTR register
•EMI reduction – 6 clock operation and ALE inhibit
•Programmable I/O pins
•Wake-up from power-down by external interrupts
•Software reset
•Power-on detect reset
•ADC charge pump disable
•ONCE mode
•ADC active in Idle mode