...h an output driver and an input buffer Many of the port pins have multiplexed I O and control functions
Port Pins as Inputs
The pins of ...bus The internal pullup is active only when the pin is outputting a logic 1 during external memory a...
...ISTER
ALU SFRs PSW TIMERS
buffer
PC INCREMENTER 8 PROGRAM COUNTER 16
PSEN ALE/PROG EA / VPP RST PD TIMING AND CONTROL
INSTRUC...bus VSS
PLASTIC LEADED CHIP CARRIER PIN FUNCTIONS
6 1 40
7
39
PLCC
XTAL2 T2 T2EX RST...
Description
80C51 8-bit microcontroller family 4K/8K/16K/32K ROM/OTP 128B/256B RAM low voltage 2.7 to 5.5 V, low power, high speed 30/33 MHz 80C51 8-bit microcontroller family 4K/8K/16K/32K ROM/OTP 128B/256B RAM low voltage 2.7 to 5.5 V low power high speed 30/33 MHz
...ISTER
ALU SFRs PSW TIMERS
buffer
PC INCREMENTER 8 PROGRAM COUNTER 16
PSEN ALE/PROG EAVPP RST PD TIMING AND CONTROL
INSTRUCTIO...bus VSS
PLASTIC LEADED CHIP CARRIER PIN FUNCTIONS
6 1 40
7
39
LCC
XTAL2 T2 T2EX RST ...
Description
80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless low voltage 2.7V.5.5V low power high speed 33 MHz 80C51 8-bit microcontroller family 4K/128 OTP/ROM/ROMless low voltage 2.7V.5.5V, low power, high speed 33 MHz
...
PROGRAM ADDRESS REGISTER
buffer TMP2 TMP1
ALU INTERRUPT, SERIAL PORT, AND TIMER BLOCKS
PC INCREMENTER
PSW
PROGRAM COUNTER...bus during accesses to external program and data memory. In this mode, P0 has internal pullups. Port...
... CLOCK GENERATOR VCC VSS OUTPUT buffer
DO
CS CLK
DESCRIPTION
The Microchip Technology Inc. 93C46B is a 1K-bit, low-voltage serial ...bus conflict" to occur during the "dummy zero" that precedes the READ operation. Under such a condit...
Description
256 Bit/1K 5.0V CMOS Serial EEPROM 1K 5.0V Microwire Serial EEPROM