MCHC908JK3CPE Freescale Semiconductor, MCHC908JK3CPE Datasheet - Page 77
MCHC908JK3CPE
Manufacturer Part Number
MCHC908JK3CPE
Description
IC MCU 4K FLASH 20-PDIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68HC908JK1CDW.pdf
(212 pages)
Specifications of MCHC908JK3CPE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Peripherals
LED, LVD, POR, PWM
Number Of I /o
15
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
20-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Connectivity
-
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Manufacturer
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7.3 SIM Bus Clock Control and Generation
7.3.1 Bus Timing
7.3.2 Clock Start-Up from POR
7.3.3 Clocks in Stop Mode and Wait Mode
MC68H(R)C908JL3
Freescale Semiconductor
—
Rev. 1.1
The bus clock generator provides system clock signals for the CPU and
peripherals on the MCU. The system clocks are generated from an
incoming clock, OSCOUT, as shown in
In user mode, the internal bus frequency is the oscillator frequency
(2OSCOUT) divided by four.
When the power-on reset module generates a reset, the clocks to the
CPU and peripherals are inactive and held in an inactive phase until after
the 4096 2OSCOUT cycle POR time-out has completed. The RST pin is
driven low by the SIM during this entire period. The IBUS clocks start
upon completion of the time-out.
Upon exit from stop mode by an interrupt, break, or reset, the SIM allows
2OSCOUT to clock the SIM counter. The CPU and peripheral clocks do
not become active until after the stop delay time-out. This time-out is
selectable as 4096 or 32 2OSCOUT cycles. (See
OSCILLATOR
OSCILLATOR
System Integration Module (SIM)
From
From
Figure 7-3. SIM Clock Signals
2OSCOUT
OSCOUT
SIM COUNTER
÷
2
SIM
Figure
GENERATORS
BUS CLOCK
System Integration Module (SIM)
7-3.
7.7.2 Stop
Technical Data
Mode.)
75
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