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Part Number: MC68HC908QT1_1173993
Description: The central processor unit (CPU08) can address 64 Kbytes of memory space. The memory map, shown in Fig...
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MC68HC908QT1_1173993
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General Description
MC68HC908QT1_1173993 General Description
The central processor unit (CPU08) can address 64 Kbytes of memory space. The memory map, shown in Figure 2-1, includes:
• 4096 bytes of user FLASH for MC68HC908QT4 and MC68HC908QY4
• 1536 bytes of user FLASH for MC68HC908QT2, MC68HC908QT1, MC68HC908QY2, and MC68HC908QY1
• 128 bytes of random access memory (RAM)
• 48 bytes of user-defined vectors, located in FLASH
• 416 bytes of monitor read-only memory (ROM)
• 1536 bytes of FLASH program and erase routines, located in ROM
MC68HC908QT1_1173993 Features
Features include:
• High-performance M68HC08 CPU core
• Fully upward-compatible object code with M68HC05 Family
• 5-V and 3-V operating voltages (VDD)
• 8-MHz internal bus operation at 5 V, 4-MHz at 3 V
• Trimmable internal oscillator
3.2 MHz internal bus operation
8-bit trim capability
± 25% untrimmed
± 5% trimmed
• Auto wake-up from STOP capability
• Configuration (CONFIG) register for MCU configuration options, including:
Low-voltage inhibit (LVI) trip point
• In-system FLASH programming
• FLASH security(1)
• On-chip in-application programmable FLASH memory (with internal program/erase voltage generation)
MC68HC908QY4 and MC68HC908QT4 - 4096 bytes
MC68HC908QY2, MC68HC908QY1, MC68HC908QT2, and MC68HC908QT1 - 1536 bytes
• 128 bytes of on-chip random-access memory (RAM)
• 2-channel, 16-bit timer interface module (TIM)
• 4-channel, 8-bit analog-to-digital converter (ADC) on
MC68HC908QY2, MC68HC908QY4, MC68HC908QT2, and
MC68HC908QT4
• 5 or 13 bidirectional input/output (I/O) lines and one input only:
Six shared with keyboard interrupt function and ADC
Two shared with timer channels
One shared with external interrupt (IRQ)
Eight extra I/O lines on 16-pin package only
High current sink/source capability on all port pins
Selectable pullups on all ports, selectable on an individual bit basis
Three-state ability on all port pins
• 6-bit keyboard interrupt with wakeup feature (KBI)
• Low-voltage inhibit (LVI) module features:
Software selectable trip point in CONFIG register
• System protection features:
Computer operating properly (COP) watchdog
Low-voltage detection with reset
Illegal opcode detection with reset
Illegal address detection with reset
• External asynchronous interrupt pin with internal pullup (IRQ) shared with general-purpose input pin
• Master asynchronous reset pin (RST) shared with general-purpose input/output (I/O) pin
• Power-on reset
• Internal pullups on IRQ and RST to reduce external components
• Memory mapped I/O registers
• Power saving stop and wait modes
• MC68HC908QY4, MC68HC908QY2, and MC68HC908QY1 are available in these packages:
16-pin plastic dual in-line package (PDIP)
16-pin small outline integrated circuit (SOIC) package
16-pin thin shrink small outline package (TSSOP)
• MC68HC908QT4, MC68HC908QT2, and MC68HC908QT1 are available in these packages:
8-pin PDIP
8-pin SOIC
Features of the CPU08 include the following:
• Enhanced HC05 programming model
• Extensive loop control functions
• 16 addressing modes (eight more than the HC05)
• 16-bit index register and stack pointer
• Memory-to-memory data transfers
• Fast 8 * 8 multiply instruction
• Fast 16/8 divide instruction
• Binary-coded decimal (BCD) instructions
• Optimization for controller applications
• Efficient C language support
• High-performance M68HC08 CPU core
• Fully upward-compatible object code with M68HC05 Family
• 5-V and 3-V operating voltages (VDD)
• 8-MHz internal bus operation at 5 V, 4-MHz at 3 V
• Trimmable internal oscillator
3.2 MHz internal bus operation
8-bit trim capability
± 25% untrimmed
± 5% trimmed
• Auto wake-up from STOP capability
• Configuration (CONFIG) register for MCU configuration options, including:
Low-voltage inhibit (LVI) trip point
• In-system FLASH programming
• FLASH security(1)
• On-chip in-application programmable FLASH memory (with internal program/erase voltage generation)
MC68HC908QY4 and MC68HC908QT4 - 4096 bytes
MC68HC908QY2, MC68HC908QY1, MC68HC908QT2, and MC68HC908QT1 - 1536 bytes
• 128 bytes of on-chip random-access memory (RAM)
• 2-channel, 16-bit timer interface module (TIM)
• 4-channel, 8-bit analog-to-digital converter (ADC) on
MC68HC908QY2, MC68HC908QY4, MC68HC908QT2, and
MC68HC908QT4
• 5 or 13 bidirectional input/output (I/O) lines and one input only:
Six shared with keyboard interrupt function and ADC
Two shared with timer channels
One shared with external interrupt (IRQ)
Eight extra I/O lines on 16-pin package only
High current sink/source capability on all port pins
Selectable pullups on all ports, selectable on an individual bit basis
Three-state ability on all port pins
• 6-bit keyboard interrupt with wakeup feature (KBI)
• Low-voltage inhibit (LVI) module features:
Software selectable trip point in CONFIG register
• System protection features:
Computer operating properly (COP) watchdog
Low-voltage detection with reset
Illegal opcode detection with reset
Illegal address detection with reset
• External asynchronous interrupt pin with internal pullup (IRQ) shared with general-purpose input pin
• Master asynchronous reset pin (RST) shared with general-purpose input/output (I/O) pin
• Power-on reset
• Internal pullups on IRQ and RST to reduce external components
• Memory mapped I/O registers
• Power saving stop and wait modes
• MC68HC908QY4, MC68HC908QY2, and MC68HC908QY1 are available in these packages:
16-pin plastic dual in-line package (PDIP)
16-pin small outline integrated circuit (SOIC) package
16-pin thin shrink small outline package (TSSOP)
• MC68HC908QT4, MC68HC908QT2, and MC68HC908QT1 are available in these packages:
8-pin PDIP
8-pin SOIC
Features of the CPU08 include the following:
• Enhanced HC05 programming model
• Extensive loop control functions
• 16 addressing modes (eight more than the HC05)
• 16-bit index register and stack pointer
• Memory-to-memory data transfers
• Fast 8 * 8 multiply instruction
• Fast 16/8 divide instruction
• Binary-coded decimal (BCD) instructions
• Optimization for controller applications
• Efficient C language support
MC68HC908QT1_1173993 Connection Diagram
MC6173
PDF/DataSheet Download
- Datasheet: MC6173
- File Size: 870882 KB
- Manufacturer: MOTOROLA [Motorola, Inc]
- Click here to Download
- ·MC6173L
- MOTOROLA [Motorola, Inc]
- 2400 bps DIGITAL DEMODULATOR
- 870882 KB
- ·MC6173P
- MOTOROLA [Motorola, Inc]
- 2400 bps DIGITAL DEMODULATOR
- 870882 KB
- ·MC623
- ONSEMI [ON Semiconductor]
- 3V, Dual Trip Point Temperature Sensor
- 73582 KB
- ·MC623DR2
- ONSEMI [ON Semiconductor]
- 3V, Dual Trip Point Temperature Sensor
- 77050 KB
- ·MC624
- PWM FAN SPEED CONTROLLER WITH FAULT DETECTION
- 226511 KB
- ·MC642
- ON SEMICONDUCTOR
- 3.0 V, Dual Trip Point Temperature Sensor
- 124927 KB
- ·MC642.REV3
- ONSEMI [ON Semiconductor]
- 3.0 V, Dual Trip Point Temperature Sensor
- 67492 KB
- ·MC660
- ETC [ETC]
- INTEGRATED CIRCUITS
- 571330 KB
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