General Description
MC68HC908JL3E Family Data Sheet, Rev. 4
16
Freescale Semiconductor
1.2 Features
Features of the MC68H(R)C908JL3E include the following:
EMC enhanced version of MC68H(R)C908JL3/JK3/JK1
High-performance M68HC08 architecture
Fully upward-compatible object code with M6805, M146805, and M68HC05 Families
Low-power design; fully static with stop and wait modes
Maximum internal bus frequency:
–
8-MHz at 5V operating voltage
–
4-MHz at 3V operating voltage
Oscillator options:
–
Crystal oscillator for MC68HC908JL3E/JK3E/JK1E
–
RC oscillator for MC68HRC908JL3E/JK3E/JK1E
User program Flash memory with security
(1)
feature
–
4,096 bytes for MC68H(R)C908JL3E/JK3E
–
1,536 bytes for MC68H(R)C908JK1E
128 bytes of on-chip RAM
2-channel, 16-bit timer interface module (TIM)
12-channel, 8-bit analog-to-digital converter (ADC)
23 general purpose I/O ports for MC68H(R)C908JL3E:
–
7 keyboard interrupt with internal pull-up
(6 keyboard interrupt for MC68HC908JL3E)
–
10 LED drivers (sink)
–
2
×
25mA open-drain I/O with pull-up
15 general purpose I/O ports for MC68H(R)C908JK3E/JK1E:
–
1 keyboard interrupt with internal pull-up
(MC68HRC908JK3E/JK1E only)
–
4 LED drivers (sink)
–
2
×
25mA open-drain I/O with pull-up
–
10-channel ADC
System protection features:
–
Optional computer operating properly (COP) reset
–
Optional low-voltage detection with reset and selectable trip points for 3V and 5V operation
–
Illegal opcode detection with reset
–
Illegal address detection with reset
Master reset pin with internal pull-up and power-on reset
IRQ with schmitt-trigger input and programmable pull-up
28-pin PDIP, 28-pin SOIC, and 48-pin LQFP packages for MC68H(R)C908JL3E
20-pin PDIP and 20-pin SOIC packages for MC68H(R)C908JK3E/JK1E
1. No security feature is absolutely secure. However, Freescale’s strategy is to make reading or copying the Flash difficult for
unauthorized users.