MC68HC908GZ8CFA Freescale Semiconductor, MC68HC908GZ8CFA Datasheet - Page 145
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MC68HC908GZ8CFA
Manufacturer Part Number
MC68HC908GZ8CFA
Description
IC MCU 8K FLASH 8MHZ CAN 48-LQFP
Manufacturer
Freescale Semiconductor
Series
HC08r
Datasheet
1.MC68908GZ8CFJER.pdf
(314 pages)
Specifications of MC68HC908GZ8CFA
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 ~ 85°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC908GZ8CFA
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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12.13.4 MSCAN08 Bus Timing Register 1
SAMP — Sampling
TSEG22–TSEG10 — Time Segment
1. In this case PHASE_SEG1 must be at least 2 time quanta.
Freescale Semiconductor
This bit determines the number of serial bus samples to be taken per bit time. If set, three samples per
bit are taken, the regular one (sample point) and two preceding samples, using a majority rule. For
higher bit rates, SAMP should be cleared, which means that only one sample will be taken per bit.
Time segments within the bit time fix the number of clock cycles per bit time and the location of the
sample point. Time segment 1 (TSEG1) and time segment 2 (TSEG2) are programmable as shown in
Table
The bit time is determined by the oscillator frequency, the baud rate prescaler, and the number of time
quanta (T
1 = Three samples per bit
0 = One sample per bit
12-8.
q
) clock cycles per bit as shown in
Address:
The CBTR0 register can be written only if the SFTRES bit in the MSCAN08
module control register is set.
The CBTR1 register can only be written if the SFTRES bit in the MSCAN08
module control register is set.
Reset:
Read:
Write:
BRP5
0
0
0
0
1
:
:
$0503
SAMP
Bit 7
0
Bit time =
Figure 12-19. Bus Timing Register 1 (CBTR1)
MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4
BRP4
TSEG22
0
0
0
0
1
:
:
(1)
6
0
Table 12-7. Baud Rate Prescaler
f
Pres value
MSCANCLK
BRP3
0
0
0
0
1
TSEG21
:
:
5
0
BRP2
Table
NOTE
NOTE
0
0
0
0
1
TSEG20
• number of time quanta
:
:
4
0
12-4).
BRP1
0
0
1
1
1
TSEG13
:
:
3
0
BRP0
Programmer’s Model of Control Registers
0
1
0
1
1
TSEG12
:
:
2
0
Prescaler
Value (P)
TSEG11
64
1
2
3
4
:
:
1
0
TSEG10
Bit 0
0
145
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