mc68hc916y3 Freescale Semiconductor, Inc, mc68hc916y3 Datasheet - Page 37

• Manufacturer Part Number: mc68hc916y3
• Description: Mc68hc16y3 16 Bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

3.1 MC68HC16Y3/916Y3 MCU Features
3.1.1 Central Processing Unit (CPU16)
3.1.2 Single-Chip Integration Module 2 (SCIM2)
3.1.3 Standby RAM (SRAM)
MC68HC16Y3/916Y3
USER’S MANUAL
This section provides general information on MC68HC16Y3 and MC68HC916Y3
MCUs. It lists features of each of the modules, shows device functional divisions and
pinouts, summarizes signal and pin functions, discusses the intermodule bus, and pro-
vides system memory maps. Timing and electrical specifications for the entire micro-
controller and for individual modules are provided in APPENDIX A ELECTRICAL
CHARACTERISTICS. Comprehensive module register descriptions and memory
maps are provided in APPENDIX D REGISTER SUMMARY.
The following paragraphs highlight capabilities of each of the MCU modules. Each
module is discussed separately in a subsequent section of this manual.
• 16-Bit architecture
• Full set of 16-bit instructions
• Three 16-bit index registers
• Two 16-bit accumulators
• Control-oriented digital signal processing capability
• Addresses up to 1 Mbyte of program memory; 1 Mbyte of data memory
• Background debug mode
• Fully static operation
• Single-chip and expanded operating modes
• External bus support in expanded mode
• Nine programmable chip-select outputs
• Phase-locked loop system clock with user-selectable fast or slow reference
• Watchdog timer, clock monitor, and bus monitor
• Address and data bus provide 32 discrete I/O lines in single-chip mode
• Enhanced reset controller
• 4-Kbyte SRAM used by the MC68HC16Y3
• 2-Kbyte SRAM used by the MC68HC916Y3
• Standby voltage (V
• Power-down status flag denotes loss of V
tion
Freescale Semiconductor, Inc.
For More Information On This Product,
STBY
SECTION 3OVERVIEW
) input for low-power standby operation
Go to: www.freescale.com
STBY
during low-power standby opera-
MOTOROLA
3-1