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Part Number: MC68HC08JB8
Description: The MC68HC908JB8 is a member of the low-cost, high-performance M68HC08 Family of 8-bit microcontroller...
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MC68HC08JB8
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General Description
MC68HC08JB8 General Description
The MC68HC908JB8 is a member of the low-cost, high-performance M68HC08 Family of 8-bit microcontroller units (MCUs). The M68HC08 Family is based on the customer-specified integrated circuit (CSIC) design strategy. 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.
MC68HC08JB8 Maximum Ratings
|
Characteristic(1) |
Symbol |
Value |
Unit |
| Supply voltage |
VDD |
0.3 to +3.9 |
V |
| Input voltage |
VIN |
VSS 0.3 to VDD+0.3 |
V |
| Maximum current per pin excluding VDD and VSS |
I |
± 25 |
mA |
| Storage temperature |
TSTG |
55 to +150 |
°C |
| Maximum current of PTD0/1 (20-pin package) |
IOL |
15 to +30 |
mA |
| Maximum current out of VSS |
IMVSS |
100 |
mA |
| Maximum current into VDD |
IMVDD |
100 |
mA |
1. Voltages referenced to VSS.
MC68HC08JB8 Features
Features of the MC68HC908JB8 include:
• High-performance M68HC08 architecture
• Fully upward-compatible object code with M6805, M146805, and M68HC05 Families
• 3-MHz internal bus frequency
• 8,192 bytes of on-chip FLASH memory
• 256 bytes of on-chip random-access memory (RAM)
• FLASH program memory security1
• On-chip programming firmware for use with host PC computer
• Up to 37 general-purpose 3.3V input/output (I/O) pins, including:
13 or 10 shared-function I/O pins, depending on package
24, 8, or 2 dedicated I/O pins, depending on package
8 keyboard interrupts on port A, on all packages
10mA sink capability for normal LED on 4 pins
25mA sink capability for infrared LED on 2 pins
10mA sink capability for PS/2 connection on 2 pins (with USB module disabled)
• 16-bit, 2-channel timer interface module (TIM) with selectable input capture, output compare, PWM capability on each channel, and external clock input option (TCLK)
• Full Universal Serial Bus Specification 1.1 low-speed functions:
1.5 Mbps data rate
On-chip 3.3V regulator
Endpoint 0 with 8-byte transmit buffer and 8-byte receive buffer
Endpoint 1 with 8-byte transmit buffer
Endpoint 2 with 8-byte transmit buffer and 8-byte receive buffer
• System protection features:
Optional computer operating properly (COP) reset
Optional low-voltage detection with reset
Illegal opcode detection with reset
Illegal address detection with reset
• Low-power design (fully static with stop and wait modes)
• Master reset pin with internal pullup and power-on reset
• External interrupt pin with programmable internal pullup (IRQ)
• 44-pin quad flat pack (QFP), 28-pin small outline integrated circuit package (SOIC), 20-pin small outline integrated circuit package (SOIC), and 20-pin plastic dual in-line package (DIP)
• Specific features of MC68HC908JB8 in 44-pin are:
Port B is 8 bits: PTB0PTB7
Port C is 8 bits: PTC0PTC7
Port D is 8 bits: PTD0PTD7
Port E is 5 bits: PTE0PTE4; 2-channel TIM module with TCLK input option
• Specific features of MC68HC908JB8 in 28-pin are:
Port B is not available
Port C is only one bit: PTC0
Port D is only 7 bits: PTD0PTD6
Port E is 5 bits: PTE0PTE4; 2-channel TIM module with TCLK input option
• Specific features of MC68HC908JB8 in 20-pin are:
Port B is not available
Port C is only one bit: PTC0
Port D is only one bit: PTD0/1; internal PTD0 and PTD1 pads are bonded together to a single pin, PTD0/1
Port E is only 3 bits: PTE1, PTE3, and PTE4; 1-channel TIM module without TCLK input option
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 architecture
• Fully upward-compatible object code with M6805, M146805, and M68HC05 Families
• 3-MHz internal bus frequency
• 8,192 bytes of on-chip FLASH memory
• 256 bytes of on-chip random-access memory (RAM)
• FLASH program memory security1
• On-chip programming firmware for use with host PC computer
• Up to 37 general-purpose 3.3V input/output (I/O) pins, including:
13 or 10 shared-function I/O pins, depending on package
24, 8, or 2 dedicated I/O pins, depending on package
8 keyboard interrupts on port A, on all packages
10mA sink capability for normal LED on 4 pins
25mA sink capability for infrared LED on 2 pins
10mA sink capability for PS/2 connection on 2 pins (with USB module disabled)
• 16-bit, 2-channel timer interface module (TIM) with selectable input capture, output compare, PWM capability on each channel, and external clock input option (TCLK)
• Full Universal Serial Bus Specification 1.1 low-speed functions:
1.5 Mbps data rate
On-chip 3.3V regulator
Endpoint 0 with 8-byte transmit buffer and 8-byte receive buffer
Endpoint 1 with 8-byte transmit buffer
Endpoint 2 with 8-byte transmit buffer and 8-byte receive buffer
• System protection features:
Optional computer operating properly (COP) reset
Optional low-voltage detection with reset
Illegal opcode detection with reset
Illegal address detection with reset
• Low-power design (fully static with stop and wait modes)
• Master reset pin with internal pullup and power-on reset
• External interrupt pin with programmable internal pullup (IRQ)
• 44-pin quad flat pack (QFP), 28-pin small outline integrated circuit package (SOIC), 20-pin small outline integrated circuit package (SOIC), and 20-pin plastic dual in-line package (DIP)
• Specific features of MC68HC908JB8 in 44-pin are:
Port B is 8 bits: PTB0PTB7
Port C is 8 bits: PTC0PTC7
Port D is 8 bits: PTD0PTD7
Port E is 5 bits: PTE0PTE4; 2-channel TIM module with TCLK input option
• Specific features of MC68HC908JB8 in 28-pin are:
Port B is not available
Port C is only one bit: PTC0
Port D is only 7 bits: PTD0PTD6
Port E is 5 bits: PTE0PTE4; 2-channel TIM module with TCLK input option
• Specific features of MC68HC908JB8 in 20-pin are:
Port B is not available
Port C is only one bit: PTC0
Port D is only one bit: PTD0/1; internal PTD0 and PTD1 pads are bonded together to a single pin, PTD0/1
Port E is only 3 bits: PTE1, PTE3, and PTE4; 1-channel TIM module without TCLK input option
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
MC68HC08JB8 Connection Diagram
MC68HC08JB8
PDF/DataSheet Download
- Datasheet: MC68HC08JB8
- File Size: 3457528 KB
- Manufacturer: Motorola
- Click here to Download
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