MC705P6ACDWE Freescale Semiconductor, MC705P6ACDWE Datasheet - Page 31

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 4
Resets
4.1 Introduction
The MCU can be reset from three sources: one external input and two internal reset conditions. The
RESET pin is a Schmitt trigger input as shown in
reset by the RST signal which is the logical OR of internal reset functions and is clocked by PH1.
4.2 External Reset (RESET)
The RESET input is the only external reset and is connected to an internal Schmitt trigger. The external
reset occurs whenever the RESET input is driven below the lower threshold and remains in reset until the
RESET pin rises above the upper threshold. The upper and lower thresholds are given in
Electrical
4.3 Internal Resets
The two internally generated resets are the initial power-on reset (POR) function and the computer
operating properly (COP) watchdog timer function.
4.3.1 Power-On Reset (POR)
The internal POR is generated at power-up to allow the clock oscillator to stabilize. The POR is strictly for
power turn-on conditions and should not be used to detect a drop in the power supply voltage. There is a
4064 internal clock cycle oscillator stabilization delay after the oscillator becomes active.
Freescale Semiconductor
Specifications.
ADDRESS
RESET
DATA
OSC
V
DD
MC68HC705P6A Advance Information Data Sheet, Rev. 2.1
POWER-ON
WATCHDOG
RESET
(COPR)
(POR)
COP
Figure 4-1. Reset Block Diagram
Figure
4-1. The CPU and all peripheral modules will be
RES
PH1
DFF
D
RST
TO CPU AND
PERIPHERALS
Chapter 14
31

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