MC68HC908GT16CB Freescale Semiconductor, MC68HC908GT16CB Datasheet - Page 181
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MC68HC908GT16CB
Manufacturer Part Number
MC68HC908GT16CB
Description
IC MCU 16K FLASH 8MHZ SPI 42-DIP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908GT8CFBE.pdf
(292 pages)
Specifications of MC68HC908GT16CB
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
36
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
42-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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15.2 SIM Bus Clock Control and Generation
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, CGMOUT, as shown in
originates from either an external oscillator or from the internal clock generator.
15.2.1 Bus Timing
In user mode, the internal bus frequency is the internal clock generator output (CGMXCLK) divided by
four.
Freescale Semiconductor
Addr.
$FE03
$FE04
$FE05
$FE06
GENERATOR
Register Name
SIM Break Flag Control
ICG
Register (SBFCR)
Register 1 (INT1)
Register 2 (INT2)
Register 3 (INT3)
Interrupt Status
Interrupt Status
Interrupt Status
See page 195.
See page 189.
See page 190.
See page 190.
ECLK
ICLK
MC68HC908GT16 • MC68HC908GT8 • MC68HC08GT16 Data Sheet, Rev. 5.0
Figure 15-2. SIM I/O Register Summary (Continued)
CIRCUIT
SELECT
CLOCK
CS
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
ICG
MONITOR MODE
Figure 15-3. System Clock Signals
USER MODE
BCFE
Bit 7
IF14
IF6
R
R
R
0
0
0
0
0
÷ 2
= Unimplemented
IF13
IF5
R
R
R
R
6
0
0
0
0
A
B S*
*WHEN S = 1,
CGMOUT = B
IF12
IF4
5
R
R
R
R
0
0
0
0
CGMXCLK
CGMOUT
COPCLK
TBMCLK
IF11
IF3
4
R
R
R
R
R
0
0
0
0
= Reserved
SIM Bus Clock Control and Generation
IF10
IF2
3
R
R
R
R
0
0
0
0
COP PRESCALER
TBM PRESCALER
÷ 2
SIM COUNTER
SIM
Figure
IF1
IF9
2
R
R
R
R
0
0
0
0
GENERATORS
BUS CLOCK
15-3. This clock
IF16
IF8
1
R
R
R
R
0
0
0
0
Bit 0
IF15
IF7
R
R
R
R
0
0
0
0
181
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