MC68HC705P6A Datasheet, PDF (33/130 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Memory
RAM
Addr.
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
Read: AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
A/D Conversion Value
$001D Data Register (ADC) Write:
See page 82.
Reset:
Unaffected by reset
Read: CC
0
A/D Status and Control
ADRC ADON
$001E
Register (ADSC) Write:
See page 80.
Reset: 0
0
0
0
0
CH2
CH1
CH0
0
0
0
0
$001F
Reserved for Test
R
R
R
R
R
R
R
R
= Unimplemented
R = Reserved
U = Undetermined
Figure 2-3. I/O and Control Register Summary (Sheet 4 of 4)
2.6 RAM
The user RAM consists of 176 bytes (including the stack) at locations
$0050 through $00FF. The stack begins at address $00FF. The stack
pointer can access 64 bytes of RAM from $00FF to $00C0.
NOTE:
Using the stack area for data storage or temporary work locations
requires care to prevent it from being overwritten due to stacking from an
interrupt or subroutine call.
2.7 EPROM/ROM
There are 4608 bytes of user EPROM at locations $0100 through
$12FF, plus 48 bytes in user page zero locations $0020 through $004F,
and 16 additional bytes for user vectors at locations $1FF0 through
$1FFF. The bootloader ROM and vectors are at locations $1F01 through
$1FEF.
MC68HC705P6A — Rev. 2.0
MOTOROLA
Memory
Advance Information
33