MC68HC908QY2CDW Datasheet, PDF (26/184 Pages) Freescale Semiconductor, Inc – Microcontrollers

Memory
$0000
↓
$003F
$0040
↓
$007F
$0080
↓
$00FF
$0100
↓
$27FF
$2800
↓
$2DFF
$2E00
↓
$EDFF
$EE00
↓
$FDFF
$FE00
$FE01
$FE02
$FE03
$FE04
$FE05
$FE06
$FE07
$FE08
$FE09
$FE0A
$FE0B
$FE0C
$FE0D
↓
$FE0F
$FE10
↓
$FFAF
$FFB0
↓
$FFBD
$FFBE
$FFBF
$FFC0
$FFC1
$FFC2
↓
$FFCF
$FFD0
↓
$FFFF
I/O REGISTERS
64 BYTES
RESERVED⁽¹⁾
64 BYTES
RAM
128 BYTES
UNIMPLEMENTED⁽¹⁾
9984 BYTES
AUXILIARY ROM
1536 BYTES
UNIMPLEMENTED⁽¹⁾
49152 BYTES
FLASH MEMORY
MC68HC908QT4 AND MC68HC908QY4
4096 BYTES
BREAK STATUS REGISTER (BSR)
RESET STATUS REGISTER (SRSR)
BREAK AUXILIARY REGISTER (BRKAR)
BREAK FLAG CONTROL REGISTER (BFCR)
INTERRUPT STATUS REGISTER 1 (INT1)
INTERRUPT STATUS REGISTER 2 (INT2)
INTERRUPT STATUS REGISTER 3 (INT3)
RESERVED FOR FLASH TEST CONTROL REGISTER (FLTCR)
FLASH CONTROL REGISTER (FLCR)
BREAK ADDRESS HIGH REGISTER (BRKH)
BREAK ADDRESS LOW REGISTER (BRKL)
BREAK STATUS AND CONTROL REGISTER (BRKSCR)
LVISR
RESERVED FOR FLASH TEST
3 BYTES
Note 1.
Attempts to execute code from addresses in this
range will generate an illegal address reset.
UNIMPLEMENTED
51712 BYTES
FLASH MEMORY
1536 BYTES
MC68HC908QT1, MC68HC908QT2,
MC68HC908QY1, and MC68HC908QY2
Memory Map
$2E00
↓
$F7FF
$F800
↓
$FDFF
MONITOR ROM 416 BYTES
FLASH
14 BYTES
FLASH BLOCK PROTECT REGISTER (FLBPR)
RESERVED FLASH
INTERNAL OSCILLATOR TRIM VALUE (VDD = 5.0 V)
INTERNAL OSCILLATOR TRIM VALUE (VDD = 3.0 V)
FLASH
14 BYTES
USER VECTORS
48 BYTES
Figure 2-1. Memory Map
MC68HC908QY/QT Family Data Sheet, Rev. 6
26
Freescale Semiconductor