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MC68HC908GR16A
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DataSheet
General Description
MC68HC908GR16A Maximum Ratings
| Characteristic | Symbol | Value | Unit |
| Supply voltage | VDD | 0.3 to +6.0 | V |
| Input voltage |
VIN | VSS0.3 to VDD +0.3 |
V |
| Maximum current per pin excluding those specified below | I | ± 15 | mA |
| Maximum current for pins PTC0PTC4 | IPTC0PTC4 | ± 25 | mA |
| Maximum current out of VSS | IMVSS | 150 | mA |
| Maximum current into VDD | Imvdd | 150 | mA |
| Storage temperature | TSTG | 55 to +150 | °C |
MC68HC908GR16A Features
For convenience, features have been organized to reflect:
• Standard features
• Features of the CPU08
1.2.1 Standard Features
Features include:
• High-performance M68HC08 architecture optimized for C-compilers
• Fully upward-compatible object code with M6805, M146805, and M68HC05 Families
• 8-MHz internal bus frequency
• Clock generation module supporting 1-MHz to 8-MHz crystals
• FLASH program memory security(1)
• On-chip programming firmware for use with host personal computer which does not require high voltage for entry
• In-system programming (ISP)
• System protection features:
Optional computer operating properly (COP) reset
Low-voltage detection with optional reset and selectable trip points for 3.3-V and 5.0-V operation
Illegal opcode detection with reset
Illegal address detection with reset
• Low-power design; fully static with stop and wait modes
• Standard low-power modes of operation:
Wait mode
Stop mode
• Master reset pin and power-on reset (POR)
• 16 Kbytes of on-chip FLASH memory
• 1 Kbyte of on-chip random-access memory (RAM)
• 406 bytes of FLASH programming routines read-only memory (ROM)
• Serial peripheral interface (SPI) module
• Enhanced serial communications interface (ESCI) module
• Fine adjust baud rate prescalers for precise control of baud rate
• Arbiter module:
Measurement of received bit timings for baud rate recovery without use of external timer
Bitwise arbitration for arbitrated UART communications
• LIN specific enhanced features:
Generation of LIN 1.2 break symbols without extra software steps on each message
Break detection filtering to prevent false interrupts
• Two 16-bit, 2-channel timer interface modules (TIM1 and TIM2) with selectable input capture,
output compare, and pulse-width modulation (PWM) capability on each channel
• Up to 8-channel, 10-bit successive approximation analog-to-digital converter (ADC) depending on
package choice
• BREAK (BRK) module to allow single breakpoint setting during in-circuit debugging
• Internal pullups on IRQ and RST to reduce customer system cost
• Up to 37 general-purpose input/output (I/O) pins, including:
28 shared-function I/O pins
Up to nine dedicated I/O pins, depending on package choice
• Selectable pullups on inputs only on ports A, C, and D. Selection is on an individual port bit basis.
During output mode, pullups are disengaged.
• High current 10-mA sink/source capability on all port pins
• Higher current 20-mA sink/source capability on PTC0PTC4
• Timebase module (TBM) with clock prescaler circuitry for eight user selectable periodic real-time
interrupts with optional active clock source during stop mode for periodic wakeup from stop using
an external crystal
• User selection of having the oscillator enabled or disabled during stop mode
• Up to 8-bit keyboard wakeup port depending on package choice
• 2 mA maximum current injection on all port pins to maintain input protection
• Available packages:
32-pin quad flat pack (LQFP)
48-pin quad flat pack (LQFP)
• Specific features of the MC68HC908GR16A in 32-pin LQFP are:
Port A is only 4 bits: PTA0PTA3; 4-pin keyboard interrupt (KBI) module
Port B is only 6 bits: PTB0PTB5; 6-channel ADC module
Port C is only 2 bits: PTC0PTC1
Port D is only 7 bits: PTD0PTD6; shared with SPI, TIM1, and TIM2 modules
Port E is only 2 bits: PTE0PTE1; shared with ESCI module
• Specific features of the MC68HC908GR16A in 48-pin LQFP are:
Port A is 8 bits: PTA0PTA7; 8-pin KBI module
Port B is 8 bits: PTB0PTB7; 8-channel ADC module
Port C is only 7 bits: PTC0PTC6
Port D is 8 bits: PTD0PTD7; shared with SPI, TIM1, and TIM2 modules
Port E is only 6 bits: PTE0PTE5; shared with ESCI module
1.2.2 Features of the CPU08
Features of the CPU08 include:
• 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
• Standard features
• Features of the CPU08
1.2.1 Standard Features
Features include:
• High-performance M68HC08 architecture optimized for C-compilers
• Fully upward-compatible object code with M6805, M146805, and M68HC05 Families
• 8-MHz internal bus frequency
• Clock generation module supporting 1-MHz to 8-MHz crystals
• FLASH program memory security(1)
• On-chip programming firmware for use with host personal computer which does not require high voltage for entry
• In-system programming (ISP)
• System protection features:
Optional computer operating properly (COP) reset
Low-voltage detection with optional reset and selectable trip points for 3.3-V and 5.0-V operation
Illegal opcode detection with reset
Illegal address detection with reset
• Low-power design; fully static with stop and wait modes
• Standard low-power modes of operation:
Wait mode
Stop mode
• Master reset pin and power-on reset (POR)
• 16 Kbytes of on-chip FLASH memory
• 1 Kbyte of on-chip random-access memory (RAM)
• 406 bytes of FLASH programming routines read-only memory (ROM)
• Serial peripheral interface (SPI) module
• Enhanced serial communications interface (ESCI) module
• Fine adjust baud rate prescalers for precise control of baud rate
• Arbiter module:
Measurement of received bit timings for baud rate recovery without use of external timer
Bitwise arbitration for arbitrated UART communications
• LIN specific enhanced features:
Generation of LIN 1.2 break symbols without extra software steps on each message
Break detection filtering to prevent false interrupts
• Two 16-bit, 2-channel timer interface modules (TIM1 and TIM2) with selectable input capture,
output compare, and pulse-width modulation (PWM) capability on each channel
• Up to 8-channel, 10-bit successive approximation analog-to-digital converter (ADC) depending on
package choice
• BREAK (BRK) module to allow single breakpoint setting during in-circuit debugging
• Internal pullups on IRQ and RST to reduce customer system cost
• Up to 37 general-purpose input/output (I/O) pins, including:
28 shared-function I/O pins
Up to nine dedicated I/O pins, depending on package choice
• Selectable pullups on inputs only on ports A, C, and D. Selection is on an individual port bit basis.
During output mode, pullups are disengaged.
• High current 10-mA sink/source capability on all port pins
• Higher current 20-mA sink/source capability on PTC0PTC4
• Timebase module (TBM) with clock prescaler circuitry for eight user selectable periodic real-time
interrupts with optional active clock source during stop mode for periodic wakeup from stop using
an external crystal
• User selection of having the oscillator enabled or disabled during stop mode
• Up to 8-bit keyboard wakeup port depending on package choice
• 2 mA maximum current injection on all port pins to maintain input protection
• Available packages:
32-pin quad flat pack (LQFP)
48-pin quad flat pack (LQFP)
• Specific features of the MC68HC908GR16A in 32-pin LQFP are:
Port A is only 4 bits: PTA0PTA3; 4-pin keyboard interrupt (KBI) module
Port B is only 6 bits: PTB0PTB5; 6-channel ADC module
Port C is only 2 bits: PTC0PTC1
Port D is only 7 bits: PTD0PTD6; shared with SPI, TIM1, and TIM2 modules
Port E is only 2 bits: PTE0PTE1; shared with ESCI module
• Specific features of the MC68HC908GR16A in 48-pin LQFP are:
Port A is 8 bits: PTA0PTA7; 8-pin KBI module
Port B is 8 bits: PTB0PTB7; 8-channel ADC module
Port C is only 7 bits: PTC0PTC6
Port D is 8 bits: PTD0PTD7; shared with SPI, TIM1, and TIM2 modules
Port E is only 6 bits: PTE0PTE5; shared with ESCI module
1.2.2 Features of the CPU08
Features of the CPU08 include:
• 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
MC68HC908GR16A Connection Diagram
MC68HC908GR16A
PDF/DataSheet Download
- Datasheet: MC68HC908GR16A
- File Size: 1801747 KB
- Manufacturer: FREESCALE
- Click here to Download
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