MC705P6ACDWE Freescale Semiconductor, MC705P6ACDWE Datasheet - Page 67
MC705P6ACDWE
Manufacturer Part Number
MC705P6ACDWE
Description
IC MCU 176 BYTES RAM 28-SOIC
Manufacturer
Freescale Semiconductor
Series
HC05r
Datasheet
1.MC705P6ACDWE.pdf
(98 pages)
Specifications of MC705P6ACDWE
Core Processor
HC05
Core Size
8-Bit
Speed
2.1MHz
Connectivity
SIO
Peripherals
POR, WDT
Number Of I /o
21
Program Memory Size
4.5KB (4.5K x 8)
Program Memory Type
OTP
Ram Size
176 x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 4x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
28-SOIC (7.5mm Width)
Processor Series
HC705P
Core
HC05
Data Bus Width
8 bit
Data Ram Size
176 B
Maximum Clock Frequency
2.1 MHz
Number Of Programmable I/os
21
Number Of Timers
1
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
8 bit, 4 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC705P6ACDWE
Manufacturer:
Freescale Semiconductor
Quantity:
135
Part Number:
MC705P6ACDWE
Manufacturer:
FREESCALE
Quantity:
20 000
Chapter 12
Central Processor Unit (CPU) Core
12.1 Introduction
The MC68HC705P6A has an 8-K memory map. Therefore, it uses only the lower 13 bits of the address
bus. In the following discussion, the upper three bits of the address bus can be ignored. Also, the STOP
instruction can be modified to place the MCU in either the normal stop mode or the halt mode by means
of a MOR bit. All other instructions and registers behave as described in this section.
12.2 Registers
The MCU contains five registers which are hard-wired within the CPU and are not part of the memory
map. These five registers are shown in
12.2.1 Accumulator
The accumulator is a general-purpose 8-bit register as shown in
accumulator to hold operands and results of arithmetic calculations or non-arithmetic operations. The
accumulator is unaffected by a reset of the device.
Freescale Semiconductor
15
0
14
0
13
0
CONDITION CODE REGISTER
MC68HC705P6A Advance Information Data Sheet, Rev. 2.1
12
Figure 12-1. MC68HC05 Programming Model
0
11
0
10
0
Figure 12-1
HALF-CARRY BIT (FROM BIT 3)
9
0
PROGRAM COUNTER
8
0
INTERRUPT MASK
7
1
1
NEGATIVE BIT
and are described in the following paragraphs.
CARRY BIT
ZERO BIT
6
1
1
5
1
INDEX REGISTER
ACCUMULATOR
H
4
Figure
STACK POINTER
3
I
12-1. The CPU uses the
N
2
1
Z
C
0
CC
SP
PC
A
X
67