MC68331CEH20 Datasheet PDF - NXP

●The MC68331CEH20 is a 32-bit Modular Microcontroller combines high-performance data manipulation capabilities with powerful peripheral subsystems. MCU is built up from standard modules that interface through a common inter-module bus. Standardization facilitates rapid development of devices tailored for specific applications. The MCU incorporates a 32-bit CPU, a system integration module, a general-purpose timer and a queued serial module. The MCU can either synthesize an internal clock signal from an external reference or use an external clock input directly. Operation with a 32.768kHz reference frequency is standard. The maximum system clock speed is 20.97MHz. Because MCU operation is fully static, register and memory contents are not affected by a loss of clock. High-density complementary metal-oxide semiconductor architecture makes the basic power consumption of the MCU low. The CPU32 instruction set includes a low-power stop command that efficiently implements this capability.

● Modular architecture

● Central processing unit (CPU32)

● Upward object code compatible

● Virtual memory implementation

● Loop mode of instruction execution

● Table lookup and interpolate instruction

● Trace on change of flow

● Hardware breakpoint signal, background mode

● Fully static operation

● External bus support

● Programmable chip-select outputs

● System protection logic

● Watchdog timer, clock monitor and bus monitor

● Test/debug sub module for factory/user test and development

● Queued serial peripheral interface - 80-byte RAM, up to 16 automatic transfers

● Dual function I/O ports

● General-purpose timer

● Three input capture channels

● Four output compare channels

● 2 Pulse-width modulation outputs