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MC68HC08JL8MDW Datasheet(PDF) 2 Page - Freescale Semiconductor, Inc |
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MC68HC08JL8MDW Datasheet(HTML) 2 Page - Freescale Semiconductor, Inc |
2 / 8 page HC908JL8AD/D Addendum to MC68HC908JL8 Technical Data MCU Block Diagram Figure 1 shows the block diagram of the MC68HC08JL8. Memory Map The MC68HC08JL8 has 8,192 bytes of user ROM from $DC00 to $FBFF, and 36 bytes of user ROM vectors from $FFDC to $FFFF. On the MC68HC908JL8, these memory locations are FLASH memory. Figure 2 shows the memory map of the MC68HC08JL8. Figure 1. MC68HC08JL8 Block Diagram SYSTEM INTEGRATION MODULE ARITHMETIC/LOGIC UNIT (ALU) CPU REGISTERS M68HC08 CPU CONTROL AND STATUS REGISTERS — 64 BYTES EXTERNAL INTERRUPT MODULE INTERNAL BUS * RST * IRQ POWER VSS 2-CHANNEL TIMER INTERFACE MODULE 1 KEYBOARD INTERRUPT MODULE 8-BIT ANALOG-TO-DIGITAL CONVERTER MODULE VDD ADC REFERENCE PTB7/ADC7 PTB6/ADC6 PTB5/ADC5 PTB4/ADC4 PTB3/ADC3 PTB2/ADC2 PTB1/ADC1 PTB0/ADC0 PTA6/KBI6**¥ PTA5/KBI5**‡ PTA4/KBI4**‡ PTA3/KBI3**‡ PTA2/KBI2**‡ PTA1/KBI1**‡ PTA0/KBI0**‡ POWER-ON RESET MODULE * Pin contains integrated pull-up device. ** Pin contains programmable pull-up device. ‡ LED direct sink pin. OSC1 ¥ OSC2/RCCLK CRYSTAL OSCILLATOR RC OSCILLATOR PTD7/RxD**†‡ PTD6/TxD**†‡ PTD5/T1CH1 PTD4/T1CH0 PTD3/ADC8‡ PTD2/ADC9‡ PTD1/ADC10 PTD0/ADC11 BREAK MODULE COMPUTER OPERATING PROPERLY MODULE # Pins available on 32-pin packages only. ¥ Shared pin: OSC2/RCCLK/PTA6/KBI6. PTA7/KBI7**‡ LOW-VOLTAGE INHIBIT MODULE SERIAL COMMUNICATIONS INTERFACE MODULE PTE1/T2CH1 PTE0/T2CH0 INTERNAL OSCILLATOR ADC12/T2CLK 2-CHANNEL TIMER INTERFACE MODULE 2 USER RAM — 256 BYTES MONITOR ROM — 447 BYTES # ## # ## # ## Pins available on 28-pin and 32-pin packages only. † 25mA open-drain if output pin. USER ROM — 8,192 BYTES USER ROM VECTORS — 36 BYTES Shaded blocks indicate differences to MC68HC908JL8 Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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