MC68HC705JP7CDW Freescale Semiconductor, MC68HC705JP7CDW Datasheet - Page 101

• Manufacturer Part Number: MC68HC705JP7CDW
• Description: IC MCU 8BIT 28-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of MC68HC705JP7CDW

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 2.1MHz
• Connectivity: SIO
• Peripherals: POR, Temp Sensor, WDT
• Number Of I /o: 22
• Program Memory Size: 6KB (6K x 8)
• Program Memory Type: OTP
• Ram Size: 224 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Chapter 10
Core Timer
10.1 Introduction
This section describes the operation of the core timer and the computer operating properly (COP)
watchdog as shown by the block diagram in
Freescale Semiconductor
$1FF0
COPR REGISTER
RESET
OVERFLOW
MC68HC705JJ7 • MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
CORE TIMER COUNTER REGISTER
Figure 10-1. Core Timer Block Diagram
÷ 2
÷ 2
BITS 0–7 OF 15-STAGE
$0009
RIPPLE COUNTER
CORE TIMER STATUS/CONTROL REGISTER
RTI RATE SELECT
÷ 2
÷ 2
Figure
÷ 2
÷ 2
10-1.
÷ 2
÷ 2
÷ 4
÷ 2
$0008
COP
WATCHDOG
RESET
÷ 2
INTERNAL CLOCK ÷ 1024
INTERNAL
CLOCK
÷ 2
POWER-ON
RESET
RESET
CORE TIMER
INTERRUPT
REQUEST
OSC1
RESET
÷ 2
101