TN80C51BH - CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
VCC Supply voltage during normal Idle and Power Down operations VSS Circuit ground VSS1 VSS1 (EPROM PLCC only) secondary ground Provided to reduce ground bounce and improve power supply bypassing NOTE This pin is not a substitute for the VSS pin (pin 22) For ROM and ROMless pin 1 is reserv
80C31BH 80C51BH 87C51 MCS 51 CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER Automotive Y Extended Automotive Temperature Range (b40 C to a125 C Ambient) Y High Performance CHMOS Process Y Power Control Modes Y 4 Kbyte On-Chip ROM EPROM Y 128 x 8-bit RAM Y 32 Programmable I O Lines Y Two 16-Bit Timer Counters Y 5 Interrupt Sources Y Quick-Pulse EPROM Programming Y 2-Level Program Memory Lock EPROM Y Boolean Processor Y Programmable Serial Port Y TTL- and CMOS-Compatible Logic Levels Y 64K External Pro
TN80C51BH Features
* 4 Kbytes of EPROM ROM (87C51 80C51BH respectively) 128 bytes of RAM 32 I O lines two 16-bit timer counters a five-source two-level interrupt structure a full duplex serial port and on-chip oscillator and clock circuitry In addition the MCS 51 CHMOS microcontroller products exhibit low operating powe
