MC9S08DZ48AMLF Freescale Semiconductor, MC9S08DZ48AMLF Datasheet - Page 188
![MCU 8BIT 48K FLASH EE 48-LQFP](/photos/37/62/376254/lqfp-48_sml.jpg)
MC9S08DZ48AMLF
Manufacturer Part Number
MC9S08DZ48AMLF
Description
MCU 8BIT 48K FLASH EE 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HCS08r
Datasheets
1.DEMO9S08DZ60.pdf
(416 pages)
2.EVB9S08DZ60.pdf
(4 pages)
3.MC9S08DZ48AMLF.pdf
(458 pages)
Specifications of MC9S08DZ48AMLF
Core Processor
HCS08
Core Size
8-Bit
Speed
40MHz
Connectivity
CAN, I²C, LIN, SCI, SPI
Peripherals
LVD, POR, PWM, WDT
Number Of I /o
39
Program Memory Size
48KB (48K x 8)
Program Memory Type
FLASH
Eeprom Size
1.5K x 8
Ram Size
3K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 16x12b
Oscillator Type
External
Operating Temperature
-40°C ~ 125°C
Package / Case
48-LQFP
Processor Series
S08DZ
Core
HCS08
Data Bus Width
8 bit
Data Ram Size
3 KB
Interface Type
CAN, I2C, SCI, SPI
Number Of Programmable I/os
40
Number Of Timers
2
Operating Supply Voltage
5.5 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWS08
Development Tools By Supplier
DEMO9S08DZ60
Minimum Operating Temperature
- 40 C
On-chip Adc
12 bit, 16 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC9S08DZ48AMLF
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Chapter 8 Multi-Purpose Clock Generator (S08MCGV2)
This section will include 3 mode switching examples using an 8 MHz external crystal. If using an external
clock source less than 1 MHz, the MCG should not be configured for any of the PLL modes (PEE and
PBE).
8.5.3.1
In this example, the MCG will move through the proper operational modes from FEI to PEE mode until
the 8 MHz crystal reference frequency is set to achieve a bus frequency of 16 MHz. Because the MCG is
in FEI mode out of reset, this example also shows how to initialize the MCG for PEE mode out of reset.
First, the code sequence will be described. Then a flowchart will be included which illustrates the
sequence.
188
1. First, FEI must transition to FBE mode:
2. Then, FBE must transition either directly to PBE mode or first through BLPE mode and then to
1
a) MCGC2 = 0x36 (%00110110)
b) Loop until OSCINIT (bit 1) in MCGSC is 1, indicating the crystal selected by the EREFS bit
c) Because RANGE = 1, set DIV32 (bit 4) in MCGC3 to allow access to the proper RDIV bits
d) MCGC1 = 0x98 (%10011000)
e) Loop until IREFST (bit 4) in MCGSC is 0, indicating the external reference is the current
f) Loop until CLKST (bits 3 and 2) in MCGSC is %10, indicating that the external reference
PBE mode:
R is the reference divider selected by the RDIV bits, B is the bus frequency divider selected by the BDIV bits,
F is the FLL factor selected by the DRS and DMX32 bits, and M is the multiplier selected by the VDIV bits.
– BDIV (bits 7 and 6) set to %00, or divide-by-1
– RANGE (bit 5) set to 1 because the frequency of 8 MHz is within the high frequency range
– HGO (bit 4) set to 1 to configure external oscillator for high gain operation
– EREFS (bit 2) set to 1, because a crystal is being used
– ERCLKEN (bit 1) set to 1 to ensure the external reference clock is active
has been initialized.
while in an FLL external mode.
– CLKS (bits 7 and 6) set to %10 in order to select external reference clock as system clock
– RDIV (bits 5-3) set to %011, or divide-by-256 because 8MHz / 256 = 31.25 kHz which is
– IREFS (bit 2) cleared to 0, selecting the external reference clock
source for the reference clock
clock is selected to feed MCGOUT
Example # 1: Moving from FEI to PEE Mode: External Crystal = 8 MHz,
Bus Frequency = 16 MHz
source
in the 31.25 kHz to 39.0625 kHz range required by the FLL
MC9S08DZ128 Series Data Sheet, Rev. 1
Freescale Semiconductor
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