MC68HC08JB1 Datasheet, PDF (24/216 Pages) Motorola, Inc – Microcontrollers

1.3 Features
Technical Data
24
Features of the MC68HC08JB1 include:
• High-performance M68HC08 architecture
• Fully upward-compatible object code with M6805, M146805, and
M68HC05 Families
• 3-MHz internal bus frequency
• 5,632 bytes of on-chip read-only memory (ROM)
• 128 bytes of on-chip random-access memory (RAM)
• ROM data security¹
• 13 general-purpose 3.3V input/output (I/O) pins, including:
– 8 keyboard interrupts on port A
– 50mA sink capability for infrared LED on PTD0/1 pin
– 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 one channel
• 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
• 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
1. No security feature is absolutely secure. However, Freescale’s strategy is to make reading or
copying the ROM difficult for unauthorized users.
MC68HC08JB1 — Rev. 2.1
Freescale Semiconductor