MC68HC908JB8JDW Freescale Semiconductor, MC68HC908JB8JDW Datasheet - Page 90
MC68HC908JB8JDW
Manufacturer Part Number
MC68HC908JB8JDW
Description
IC MCU 8K FLASH 3MHZ 20-SOIC
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908JB8JDWE.pdf
(286 pages)
Specifications of MC68HC908JB8JDW
Core Processor
HC08
Core Size
8-Bit
Speed
3MHz
Connectivity
USB
Peripherals
LVD, POR, PWM
Number Of I /o
13
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
20-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
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Oscillator (OSC)
7.3 Oscillator External Connections
Technical Data
90
In its typical configuration, the oscillator requires five external
components. The crystal oscillator is normally connected in a Pierce
oscillator configuration, as shown in
the logical representation of the internal components and may not
represent actual circuitry. The oscillator configuration uses five
components:
FROM SIM
•
•
•
•
•
SIMOSCEN
Crystal, X
Fixed capacitor, C
Tuning capacitor, C
Feedback resistor, R
Series resistor, R
MCU
Figure 7-1. Oscillator External Connections
1
OSC1
Oscillator (OSC)
C1
MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
R
X1
B
S
1
(optional)
2
B
TO USB
(can also be a fixed capacitor)
OSC2
R
C2
S
*
Figure
DOUBLER
CLOCK
* R
higher frequency crystals.
Refer to manufacturer’s data.
S
can be 0 (shorted) when used with
7-1. This figure shows only
OSCXCLK
TO SIM
Freescale Semiconductor
÷ 2
OSCOUT
TO SIM
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