MC68HC908JL3ECDW Freescale Semiconductor, MC68HC908JL3ECDW Datasheet - Page 127

• Manufacturer Part Number: MC68HC908JL3ECDW
• Description: IC MCU 4K FLASH 8MHZ 28-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC08r

Specifications of MC68HC908JL3ECDW

• Core Processor: HC08
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: LED, LVD, POR, PWM
• Number Of I /o: 23
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.3 V
• Data Converters: A/D 12x8b
• Oscillator Type: External
• 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: -
• Connectivity: -

Chapter 14
Low Voltage Inhibit (LVI)
14.1 Introduction
This section describes the low-voltage inhibit module (LVI), which monitors the voltage on the V
and generates a reset when the V
14.2 Features
Features of the LVI module include the following:
14.3 Functional Description
Figure 14-1
contains a bandgap reference circuit and comparator. Setting LVI disable bit (LVID) disables the LVI to
monitor V
LVI module should take actions.
The LVI module generates one output signal:
LVI Reset — an reset signal will be generated to reset the CPU when V
point.
Freescale Semiconductor
•
•
Selectable LVI trip voltage
Selectable LVI circuit disable
DD
shows the structure of the LVI module. The LVI is enabled after a reset. The LVI module
voltage. The LVI trip voltage selection bits (LVIT1, LVIT0) determine at which V
LVIT1
DETECTOR
LOW V
V
DD
DD
LVIT0
V
V
DD
DD
Figure 14-1. LVI Module Block Diagram
> LVI
< LVI
MC68HC908JL3E Family Data Sheet, Rev. 4
DD
TRIP
TRIP
voltage falls to the LVI trip (LVI
= 0
= 1
LVID
TRIP
DD
) voltage.
drops to below the set trip
LVI RESET
DD
level the
DD
pin
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