Details, datasheet, quote on part number: MC68HC908JB8FB
PartMC68HC908JB8FB
CategoryMicrocontrollers => 8 bit => M68HC08 Family
TitleM68HC08 Family
DescriptionAddendum to MC68HC908JB8 Technical Data Rev. 2.0
CompanyMotorola Semiconductor Products
DatasheetDownload MC68HC908JB8FB datasheet
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Features, Applications

This addendum provides additional information to the MC68HC908JB8 Technical Data, Rev. 2 (Motorola document number MC68HC908JB8/D),

The MC68HC08JB8A is the ROM part equivalent to the MC68HC908JB8. The entire MC68HC908JB8 data book apply to this ROM device, with exceptions outlined in this addendum. Table 1. Summary of MC68HC08JB8A and MC68HC908JB8 Differences

MC68HC08JB8A Memory ($DC00$FBFF) User vectors ($FFF0$FFFF) Registers at $FE08 and $FF09 8,192 bytes ROM 16 bytes ROM Not used; locations are reserved. $FC00$FDFF: Not used. $FE10$FFDF: Used for testing purposes only. VDD level (5V logic) MC68HC908JB8 8,192 bytes FLASH 16 bytes FLASH related registers. $FE08 FLCR $FF09 FLBPR Used for testing and FLASH programming/erasing. VREG level (3.3V logic)

The MC68HC08JB8A has 8,192 bytes of user ROM from $DC00 to $FBFF, and 16 bytes of user ROM vectors from $FFF0 to $FFFF. On the MC68HC908JB8, these memory locations are FLASH memory. Figure 2 shows the memory map of the MC68HC08JB8A.

MONITOR ROM 464 BYTES LOW VOLTAGE INHIBIT MODULE DDRD PTD

(1) Pins have 5V logic. (2) Pins have integrated pullup device. (3) Pins have software configurable pull-up device. (4) Pins are open-drain when configured as output. (5) Pins have 10mA sink capability. (6) Pins have 25mA sink capability. Shaded blocks indicate differences to MC68HC908JB8

INTERNAL BUS M68HC08 CPU PTA0/KBA0 (3) ARITHMETIC/LOGIC UNIT (ALU) KEYBOARD INTERRUPT MODULE (4) (5) SYSTEM INTEGRATION MODULE (4) (5) COMPUTER OPERATING PROPERLY MODULE PTE0/TCLK (3) USB MODULE POWER USB ENDPOINT 1, 2 OSCILLATOR POWER-ON RESET MODULE IRQ MODULE

$013F $0140 $DBFF $DC00 $FBFF $FC00 $FDFF $FE0F $FE10 $FFDF $FFE0 $FFEF $FFF0 $FFFF

I/O Registers 64 Bytes RAM 256 Bytes Unimplemented 56,000 Bytes ROM 8,192 Bytes Unimplemented 512 Bytes Break Status Register (BSR) Reset Status Register (RSR) Reserved Break Flag Control Register (BFCR) Interrupt Status Register 1 (INT1) Reserved Break Address High Register (BRKH) Break Address Low Register (BRKL) Break Status and Control Register (BRKSCR) Reserved Monitor ROM 464 Bytes Reserved 16 Bytes ROM Vectors 16 Bytes


 

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