MC908MR8MPE Freescale Semiconductor, MC908MR8MPE Datasheet - Page 95
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MC908MR8MPE
Manufacturer Part Number
MC908MR8MPE
Description
IC MCU 8BIT 8K FLASH 28-PDIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MCHC908MR8VFAE.pdf
(372 pages)
Specifications of MC908MR8MPE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI
Peripherals
LVD, POR, PWM
Number Of I /o
12
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
28-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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7.4.2 Active Resets from Internal Sources
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
CGMOUT
CGMXCLK
RST
IAB
NOTE:
IRST
RST
IAB
PC
All internal reset sources actively pull the RST pin low for 32 CGMXCLK
cycles to allow resetting of external peripherals. The internal reset signal
(IRST) continues to be asserted for an additional 32 cycles (see
Figure
opcode, COP timeout, LVI, or POR (see
For LVI or POR resets, the SIM cycles through 4096 CGMXCLK cycles
during which the SIM forces the RST pin low. The internal reset signal
then follows the sequence from the falling edge of RST as shown in
Figure
RST PULLED LOW BY MCU
Reset Type
All Others
Figure 7-4. External Reset Timing
POR/LVI
Figure 7-5. Internal Reset Timing
7-5). An internal reset can be caused by an illegal address, illegal
7-5.
System Integration Module (SIM)
32 CYCLES
Table 7-2. PIN Bit Set Timing
Number of Cycles Required to set PIN
32 CYCLES
VECT H
4163 (4096 + 64 + 3)
Figure
67 (64 + 3)
VECT L
VECTOR HIGH
System Integration Module (SIM)
Reset and System Initialization
7-6).
Technical Data
95
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