MC68HC908MR8CP Freescale Semiconductor, MC68HC908MR8CP Datasheet - Page 73
MC68HC908MR8CP
Manufacturer Part Number
MC68HC908MR8CP
Description
IC MCU 8K FLASH 8MHZ PWM 28-DIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MCHC908MR8VFAE.pdf
(372 pages)
Specifications of MC68HC908MR8CP
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI
Peripherals
LVD, POR, PWM
Number Of I /o
12
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC908MR8CP
Manufacturer:
FREESCALE
Quantity:
3
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6.4.1 Accumulator
6.4.2 Index Register
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
Read:
Write:
The accumulator is a general-purpose 8-bit register. The CPU uses the
accumulator to hold operands and the results of arithmetic/logic
operations.
The 16-bit index register allows indexed addressing of a 64-Kbyte
memory space. H is the upper byte of the index register, and X is the
lower byte. H:X is the concatenated 16-bit index register.
In the indexed addressing modes, the CPU uses the contents of the
index register to determine the conditional address of the operand.
The index register can serve also as a temporary data storage location.
Re-
set:
Read:
Write:
set:
Re-
X = Indeterminate
Bit
15
0
Bit 7
14
0
Central Processor Unit (CPU)
13
0
12
Figure 6-3. Index Register (H:X)
6
0
Figure 6-2. Accumulator (A)
11
0
5
10
0
Unaffected by reset
9
0
4
8
0
X
7
3
X
6
Central Processor Unit (CPU)
X
5
2
X
4
X
3
1
Technical Data
CPU Registers
2
X
X
1
Bit 0
Bit
X
0
73
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