MC68HC908BD48IFB Freescale Semiconductor, MC68HC908BD48IFB Datasheet - Page 93
MC68HC908BD48IFB
Manufacturer Part Number
MC68HC908BD48IFB
Description
IC MCU 48K FLASH 6MHZ USB 44PQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908BD48IBE.pdf
(288 pages)
Specifications of MC68HC908BD48IFB
Core Processor
HC08
Core Size
8-Bit
Speed
6MHz
Connectivity
I²C, USB
Peripherals
POR, PWM
Number Of I /o
32
Program Memory Size
48KB (48K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 6x8b
Oscillator Type
Internal
Operating Temperature
0°C ~ 85°C
Package / Case
44-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC908BD48IFB
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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7.4.2 Active Resets from Internal Sources
MC68HC908BD48
Freescale Semiconductor
—
Rev. 2.1
SIM module in HC08 has the capability to drive the RST pin low when
internal reset events occur.
All internal reset sources actively pull the RST pin low for 32 OSCXCLK
cycles to allow resetting of external peripherals. The internal reset signal
IRST continues to be asserted for an additional 32 cycles
4. Internal Reset
address, illegal opcode, COP timeout, or POR
of Internal
4096 OSCXCLK cycles during which the SIM forces the RST pin low.
The internal reset signal then follows the sequence from the falling edge
of RST shown in
The COP reset is asynchronous to the bus clock.
OSCXCLK
OSCOUT
IRST
RST
RST
IAB
IAB
System Integration Module (SIM)
PC
Reset). Note that for POR resets, the SIM cycles through
Figure
Figure 7-3. External Reset Timing
Timing). An internal reset can be caused by an illegal
RST PULLED LOW BY MCU
Figure 7-4. Internal Reset Timing
7-4.
32 CYCLES
System Integration Module (SIM)
VECT H VECT L
32 CYCLES
(see Figure 7-5. Sources
(see Figure 7-
VECTOR HIGH
Data Sheet
93
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