MC68908GZ8VFAE Freescale Semiconductor, MC68908GZ8VFAE Datasheet - Page 134
![IC MCU 8BIT 8K FLASH 48-LQFP](/photos/37/62/376278/tqfp-48_sml.jpg)
MC68908GZ8VFAE
Manufacturer Part Number
MC68908GZ8VFAE
Description
IC MCU 8BIT 8K FLASH 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68908GZ8CFJER.pdf
(314 pages)
Specifications of MC68908GZ8VFAE
Core Processor
HC08
Core Size
8-Bit
Speed
8MHz
Connectivity
CAN, LIN, SCI, SPI
Peripherals
LVD, POR, PWM
Number Of I /o
37
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
48-LQFP
Processor Series
M689xx
Core
HC08
Data Bus Width
8 bit
Data Ram Size
1 KB
Interface Type
ESCI, SPI, UART
Maximum Clock Frequency
8 MHz
Number Of Programmable I/os
37
Number Of Timers
2
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Development Tools By Supplier
FSICEBASE, M68CBL05AE, DEMO908GZ60E, M68EML08GZE
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68908GZ8VFAE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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MSCAN08 Controller (MSCAN08)
A programmable prescaler is used to generate out of the MSCAN08 clock the time quanta (Tq) clock. A
time quantum is the atomic unit of time handled by the MSCAN08.
A bit time is subdivided into three segments
1. For further explanation of the underlying concepts please refer to ISO/DIS 11 519-1, Section 10.3.
134
•
•
•
SYNC_SEG: This segment has a fixed length of one time quantum. Signal edges are expected to
happen within this section.
Time segment 1: This segment includes the PROP_SEG and the PHASE_SEG1 of the CAN
standard. It can be programmed by setting the parameter TSEG1 to consist of 4 to 16 time quanta.
Time segment 2: This segment represents PHASE_SEG2 of the CAN standard. It can be
programmed by setting the TSEG2 parameter to be 2 to 8 time quanta long.
CGM
MSCAN08
If the system clock is generated from a PLL, it is recommended to select the
crystal clock source rather than the system clock source due to jitter
considerations, especially at faster CAN bus rates.
OSC
÷ 2
MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4
CGMXCLK
Bit rate =
Figure 12-8. Clocking Scheme
PLL
CLKSRC
f
Tq
=
(1)
(see
Presc value
f
No. of time quanta
MSCANCLK
NOTE
Figure
f
Tq
÷ 2
÷ 2
12-9):
PRESCALER
(1 ... 64)
(2 * BUS FREQUENCY)
BCS
Freescale Semiconductor
MSCANCLK
CGMOUT
(TO SIM)
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