Chapter 1 general description, 1 introduction, 2 features – Freescale Semiconductor MC68HC908MR32 User Manual
Page 17: Chapter 1, General description, Introduction, Features
MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1
Freescale Semiconductor
17
Chapter 1
General Description
1.1 Introduction
The MC68HC908MR32 is a member of the low-cost, high-performance M68HC08 Family of 8-bit
microcontroller units (MCUs). All MCUs in the family use the enhanced M68HC08 central processor unit
(CPU08) and are available with a variety of modules, memory sizes and types, and package types.
The information contained in this document pertains to the MC68HC908MR16 with the exceptions shown
in
.
1.2 Features
Features include:
•
High-performance M68HC08 architecture
•
Fully upward-compatible object code with M6805, M146805, and M68HC05 Families
•
8-MHz internal bus frequency
•
On-chip FLASH memory with in-circuit programming capabilities of FLASH program memory:
MC68HC908MR32 — 32 Kbytes
MC68HC908MR16 — 16 Kbytes
•
On-chip programming firmware for use with host personal computer
•
FLASH data security
(1)
•
768 bytes of on-chip random-access memory (RAM)
•
12-bit, 6-channel center-aligned or edge-aligned pulse-width modulator (PWMMC)
•
Serial peripheral interface module (SPI)
•
Serial communications interface module (SCI)
•
16-bit, 4-channel timer interface module (TIMA)
•
16-bit, 2-channel timer interface module (TIMB)
•
Clock generator module (CGM)
•
Low-voltage inhibit (LVI) module with software selectable trip points
•
10-bit, 10-channel analog-to-digital converter (ADC)
•
System protection features:
–
Optional computer operating properly (COP) reset
–
Low-voltage detection with optional reset
–
Illegal opcode or address detection with optional reset
–
Fault detection with optional PWM disabling
1. No security feature is absolutely secure. However, Freescale’s strategy is to make reading or copying the FLASH difficult for
unauthorized users.