128/256 byte RAM ROMless low voltage (2.7 V5.5 V), low power, high speed (33 MHz)
128/256 byte RAM ROMless low voltage (2.7V5.5V), low power, high speed (33 MHz)
DESCRIPTION
The Philips is a high-performance static 80C51 design fabricated with Philips high-density CMOS technology with operation from 5.5 V. The 80C31/32 ROMless devices contain × 8 RAM, 32 I/O lines, three 16-bit counter/timers, a six-source, four-priority level nested interrupt structure, a serial I/O port for either multi-processor communications, I/O expansion or full duplex UART, and on-chip oscillator and clock circuits. In addition, the device is a low power static design which offers a wide range of operating frequencies down to zero. Two software selectable modes of power reduction--idle mode and power-down mode are available. The idle mode freezes the CPU while allowing the RAM, timers, serial port, and interrupt system to continue functioning. The power-down mode saves the RAM contents but freezes the oscillator, causing all other chip functions to be inoperative. Since the design is static, the clock can be stopped without loss of user data and then the execution resumed from the point the clock was stopped.
FEATURES
RAM (80C31) RAM (80C32) Three 16-bit counter/timers Boolean processor Full static operation Low voltage V@ 16 MHz) operation
Clock can be stopped and resumed Idle mode Power-down mode
For applications requiring more ROM and RAM, see the 8XC54/58 and 8XC51RA+/RB+/RC+/80C51RA+ data sheet. ROM/EPROM Memory Size 128 No RAM Size by 8) Programmable Timer Counter (PCA) Hardware Watch Dog Timer
· Three package styles· Extended temperature ranges· Dual Data Pointers· 4 level priority interrupt· 6 interrupt sources· Four 8-bit I/O ports· Fullduplex enhanced UART
Framing error detection Automatic address recognition
· Programmable clock out· Asynchronous port reset· Low EMI (inhibit ALE)· Wake-up from Power Down by an external interrupt
ROMless P80C31SFB B TEMPERATURE RANGE °C AND PACKAGE line Package +70 +70, Plastic Dual In In-line +70 Plastic Leaded Chip Carrier +70 +70, Plastic Quad Flat Pack +85 +85, Plastic Dual In In-line line Package +85, +85 Plastic Leaded Chip Carrier +85, +85 Plastic Quad Flat Pack VOLTAGE RANGE 2.7 55V FREQ. (MHz) to 16 DRAWING NUMBER 2 SOT307-2
DEVICE NUMBER P80C31 P80C32 OPERATING FREQUENCY, MAX (S) = 16 MHz = 33 MHz TEMPERATURE RANGE (B) to +85_C PACKAGE (AA) AA = PLCC BB = PQFP PN = PDIP
ROMless P80C32UFB B TEMPERATURE RANGE °C AND PACKAGE to +70, Plastic Dual In-line Package to +70, Plastic Leaded Chip Carrier to +70, Plastic Quad Flat Pack to +85, Plastic Dual In-line Package to +85, Plastic Leaded Chip Carrier to +85, Plastic Quad Flat Pack to +70, Plastic Leaded Chip Carrier to +70, Plastic Dual In-line Package to +70, Plastic Quad Flat Pack to +85, Plastic Leaded Chip Carrier to +85, Plastic Dual In-line Package to +85, Plastic Quad Flat Pack FREQ MHz DRAWING NUMBER SOT129-1 SOT307-2
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