MC908GZ32CFAE Freescale Semiconductor, MC908GZ32CFAE Datasheet - Page 76
![IC MCU 32K FLASH 8MHZ 48-LQFP](/photos/37/62/376278/tqfp-48_sml.jpg)
MC908GZ32CFAE
Manufacturer Part Number
MC908GZ32CFAE
Description
IC MCU 32K FLASH 8MHZ 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908GZ60CFJE.pdf
(352 pages)
Specifications of MC908GZ32CFAE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
CAN, SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
37
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 24x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-LQFP
Processor Series
HC08GZ
Core
HC08
Data Bus Width
8 bit
Data Ram Size
1.5 KB
Interface Type
CAN/ESCI/SPI
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
53
Number Of Timers
8
Operating Supply Voltage
5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Development Tools By Supplier
FSICEBASE, DEMO908GZ60E, M68EML08GZE
Minimum Operating Temperature
- 40 C
On-chip Adc
24-ch x 10-bit
Controller Family/series
HC08
No. Of I/o's
37
Ram Memory Size
1.5KB
Cpu Speed
8MHz
No. Of Timers
2
Embedded Interface Type
CAN, SCI, SPI
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC908GZ32CFAE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC908GZ32CFAE
Manufacturer:
FREESCALE
Quantity:
20 000
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Clock Generator Module (CGM)
frequency, f
comparison.
4.3.4 Acquisition and Tracking Modes
The PLL filter is manually or automatically configurable into one of two operating modes:
4.3.5 Manual and Automatic PLL Bandwidth Modes
The PLL can change the bandwidth or operational mode of the loop filter manually or automatically.
Automatic mode is recommended for most users.
In automatic bandwidth control mode (AUTO = 1), the lock detector automatically switches between
acquisition and tracking modes. Automatic bandwidth control mode also is used to determine when the
VCO clock, CGMVCLK, is safe to use as the source for the base clock, CGMOUT. (See
Bandwidth Control
request and then check the LOCK bit. If interrupts are disabled, software can poll the LOCK bit
continuously (for example, during PLL start up) or at periodic intervals. In either case, when the LOCK bit
is set, the VCO clock is safe to use as the source for the base clock. (See
Circuit.) If the VCO is selected as the source for the base clock and the LOCK bit is clear, the PLL has
suffered a severe noise hit and the software must take appropriate action, depending on the application.
(See
The following conditions apply when the PLL is in automatic bandwidth control mode:
The PLL also may operate in manual mode (AUTO = 0). Manual mode is used by systems that do not
require an indicator of the lock condition for proper operation. Such systems typically operate well below
f
76
BUSMAX
•
•
•
•
•
•
•
4.6 Interrupts
Acquisition mode — In acquisition mode, the filter can make large frequency corrections to the
VCO. This mode is used at PLL start up or when the PLL has suffered a severe noise hit and the
VCO frequency is far off the desired frequency. When in acquisition mode, the ACQ bit is clear in
the PLL bandwidth control register. (See
Tracking mode — In tracking mode, the filter makes only small corrections to the frequency of the
VCO. PLL jitter is much lower in tracking mode, but the response to noise is also slower. The PLL
enters tracking mode when the VCO frequency is nearly correct, such as when the PLL is selected
as the base clock source. (See
tracking mode when not in acquisition mode or when the ACQ bit is set.
The ACQ bit (See
the filter. (See
The ACQ bit is set when the VCO frequency is within a certain tolerance and is cleared when the
VCO frequency is out of a certain tolerance. (See
more information.)
The LOCK bit is a read-only indicator of the locked state of the PLL.
The LOCK bit is set when the VCO frequency is within a certain tolerance and is cleared when the
VCO frequency is out of a certain tolerance. (See
more information.)
CPU interrupts can occur if enabled (PLLIE = 1) when the PLL’s lock condition changes, toggling
the LOCK bit. (See
.
RCLK
. The circuit determines the mode of the PLL and the lock condition based on this
Register.) If PLL interrupts are enabled, the software can wait for a PLL interrupt
MC68HC908GZ60 • MC68HC908GZ48 • MC68HC908GZ32 Data Sheet, Rev. 6
for information and precautions on using interrupts.)
4.3.4 Acquisition and Tracking
4.5.2 PLL Bandwidth Control
4.5.1 PLL Control
4.3.8 Base Clock Selector
Register.)
4.5.2 PLL Bandwidth Control
Modes.)
Register.) is a read-only indicator of the mode of
4.8 Acquisition/Lock Time Specifications
4.8 Acquisition/Lock Time Specifications
Circuit.) The PLL is automatically in
4.3.8 Base Clock Selector
Register.)
Freescale Semiconductor
4.5.2 PLL
for
for
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