MC908GZ32VFAER Freescale Semiconductor, MC908GZ32VFAER Datasheet - Page 154
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MC908GZ32VFAER
Manufacturer Part Number
MC908GZ32VFAER
Description
IC MCU 8BIT 32K FLASH 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC908GZ60CFJE.pdf
(352 pages)
Specifications of MC908GZ32VFAER
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 ~ 105°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC908GZ32VFAER
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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MSCAN08 Controller (MSCAN08)
12.12.3 Data Length Register (DLR)
This register keeps the data length field of the CAN frame.
DLC3–DLC0 — Data Length Code Bits
12.12.4 Data Segment Registers (DSRn)
The eight data segment registers contain the data to be transmitted or received. The number of bytes to
be transmitted or being received is determined by the data length code in the corresponding DLR.
12.12.5 Transmit Buffer Priority Registers
PRIO7–PRIO0 — Local Priority
154
The data length code contains the number of bytes (data byte count) of the respective message. At
transmission of a remote frame, the data length code is transmitted as programmed while the number
of transmitted bytes is always 0. The data byte count ranges from 0 to 8 for a data frame.
shows the effect of setting the DLC bits.
This field defines the local priority of the associated message buffer. The local priority is used for the
internal prioritization process of the MSCAN08 and is defined to be highest for the smallest binary
number. The MSCAN08 implements the following internal prioritization mechanism:
•
•
•
All transmission buffers with a cleared TXE flag participate in the prioritization right before the SOF
is sent.
The transmission buffer with the lowest local priority field wins the prioritization.
In case more than one buffer has the same lowest priority, the message buffer with the lower index
number wins.
Address:
Reset:
Read:
Write:
MC68HC908GZ60 • MC68HC908GZ48 • MC68HC908GZ32 Data Sheet, Rev. 6
Figure 12-14. Transmit Buffer Priority Register (TBPR)
$05bD
PRIO7
Bit 7
DLC3
0
0
0
0
0
0
0
0
1
PRIO6
6
Table 12-5. Data Length Codes
Data Length Code
DLC2
0
0
0
0
1
1
1
1
0
PRIO5
5
DLC1
0
0
1
1
0
0
1
1
0
PRIO4
Unaffected by reset
4
DLC0
0
1
0
1
0
1
0
1
0
PRIO3
3
Data Byte
Count
PRIO2
0
1
2
3
4
5
6
7
8
2
PRIO1
1
Freescale Semiconductor
PRIO0
Bit 0
Table 12-5
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