The MCS® 51 CHMOS microcontroller products are fabricated on Intel’s reliable CHMOS process and are functionally compatible with the standard MCS 51 HMOS microcontroller products. This technology combines the high speed and density characteristics of HMOS with the low power attributes of CHMOS. This combination expands the effectiveness of the powerful MCS 51 microcontroller architecture and instruction set.

■ Extended Automotive Temperature Range (b40§C to a125§C Ambient)
■ High Performance CHMOS Process
■ Power Control Modes
■ 4 Kbyte On-Chip ROM/EPROM
■ 128 x 8-bit RAM
■ 32 Programmable I/O Lines
■ Two 16-Bit Timer/Counters
■ 5 Interrupt Sources
■ Quick-Pulse EPROM Programming
■ 2-Level Program Memory Lock EPROM
■ Boolean Processor
■ Programmable Serial Port
■ TTL- and CMOS-Compatible Logic Levels
■ 64K External Program Memory Space
■ 64K External Data Memory Space
■ IDLE and POWER DOWN Modes
■ ONCE Mode Facilitates System Testing
■ Available in 12 MHz and 16 MHz Versions
■ Available in PLCC and DIP Packages