MC705P6ACDWE Freescale Semiconductor, MC705P6ACDWE Datasheet - Page 41

IC MCU 176 BYTES RAM 28-SOIC

MC705P6ACDWE

Manufacturer Part Number
MC705P6ACDWE
Description
IC MCU 176 BYTES RAM 28-SOIC
Manufacturer
Freescale Semiconductor
Series
HC05r
Datasheet

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

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Chapter 7
Serial Input/Output Port (SIOP)
7.1 Introduction
The simple synchronous serial I/O port (SIOP) subsystem is designed to provide efficient serial
communications between peripheral devices or other MCUs. The SIOP is implemented as a 3-wire
master/slave system with serial clock (SCK), serial data input (SDI), and serial data output (SDO). A block
diagram of the SIOP is shown in
is MSB or LSB first.
The SIOP subsystem shares its input/output pins with port B. When the SIOP is enabled (SPE bit set in
register SCR), port B DDR and data registers are modified by the SIOP. Although port B DDR and data
registers can be altered by application software, these actions could affect the transmitted or received
data.
Freescale Semiconductor
7 6 5 4 3 2 1 0
REGISTER
CONTROL
$0A
HCO5 INTERNAL BUS
GENERATOR
CPU CLOCK
INTERNAL
BAUD
RATE
MC68HC705P6A Advance Information Data Sheet, Rev. 2.1
Figure
Figure 7-1. SIOP Block Diagram
7 6 5 4 3 2 1 0
REGISTER
STATUS
7-1. A mask programmable option determines whether the SIOP
$0B
7 6 5 4 3 2 1 0
REGISTER
SHIFT
8-BIT
$0C
SPE
SDO
SDI
SCK
CONTROL
LOGIC
I/O
SDO/PB5
SDI/PB6
SCK/PB7
41

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