MC68HC908LB8CPE Freescale Semiconductor, MC68HC908LB8CPE Datasheet - Page 55
MC68HC908LB8CPE
Manufacturer Part Number
MC68HC908LB8CPE
Description
IC MCU 8K FLASH 8MHZ 20DIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68HC908LB8CDWE.pdf
(234 pages)
Specifications of MC68HC908LB8CPE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Peripherals
LVR, POR, PWM
Number Of I /o
18
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 7x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC908LB8CPE
Manufacturer:
IR
Quantity:
10
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4.5 Low Power Modes
4.5.1 Wait Mode
The WAIT instruction places the MCU in a low power consumption mode. While in WAIT the op
amp/comparator cannot be enabled or disabled. If the op amp/comparator module is not needed during
wait mode, reduce power consumption by disabling the op amp/comparator before executing the WAIT
command.
4.5.2 Stop Mode
The op amp/comparator is inactive after execution of the STOP command. The
op amp/comparator will be in a low-power state and will not drive its output pin. When the MCU exits stop
mode after and external interrupt, the op amp/comparator continues operation.
4.6 Op Amp/Comparator Control Register
There is a single operational control register (OACCR) that contains the enable bit for the op
amp/comparator.
OACM — Op Amp/Comparator Mode Select Bit
Freescale Semiconductor
This bit selects between 2 modes of operation, op amp mode and comparator mode.
1 = Op amp mode selected
Address: $0039
In order to read the digital states of the pins configured as inputs, the data
direction register bit must be a 0; to read the states of the pins configured
as outputs the data direction register bit must be a 1.
Reset:
Read:
Write:
GROUND
GROUND
Figure 4-3. Op Amp/Comparator Control Register (OACCR)
V+
V–
OACM
Bit 7
0
Figure 4-2. Op Amp/Comparator Block Diagram
= Unimplemented
U
6
OACE
OACE
MC68HC908LB8 Data Sheet, Rev. 1
U
5
U
4
U = Unaffected
+
-
OACE
U
3
U
2
OACE
U
1
V
FLOATING
OUT
OACE
Bit 0
0
Low Power Modes
55
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