MC68376BGMAB20 Freescale Semiconductor, MC68376BGMAB20 Datasheet - Page 409

• Manufacturer Part Number: MC68376BGMAB20
• Description: IC MCU 32BIT 8K ROM 160-QFP
• Manufacturer: Freescale Semiconductor
• Series: M683xxr

Specifications of MC68376BGMAB20

• Core Processor: CPU32
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: CAN, EBI/EMI, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Type: ROMless
• Ram Size: 7.5K x 8
• Voltage - Supply (vcc/vdd): 4.75 V ~ 5.25 V
• Data Converters: A/D 16x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 160-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

PRESDIV — Prescaler Divide Register
CANCTRL2 — Control Register 2
D.10.6 Prescaler Divide Register
PRESDIV — Prescaler Divide Factor
D.10.7 Control Register 2
RJW[1:0] — Resynchronization Jump Width
MC68336/376
USER’S MANUAL
15
15
0
0
RESET:
RESET:
where
PRESDIV determines the ratio between the system clock frequency and the serial
clock (S-clock).
The S-clock is determined by the following calculation:
The reset value of PRESDIV is $00, which forces the S-clock to default to the same
frequency as the system clock.
The valid programmed values are 0 through 255.
The RJW field defines the maximum number of time quanta a bit time may be changed
during resynchronization.
The valid programmed values are 0 through 3.
The resynchronization jump width is calculated as follows:
14
14
0
0
13
13
0
0
Propagation Segment Time
12
12
Resynchronization Jump Width
0
0
PRESDIV
PRESDIV
1 Time Quantum
11
11
0
0
10
10
0
0
REGISTER SUMMARY
9
0
9
0
S-clock
=
8
0
8
0
1 Serial Clock (S-clock) Period
=
=
----------------------------------- -
PRESDIV
7
0
7
0
RJW[1:0]
PROPSEG
f sys
=
6
0
6
0
RJW
+
5
0
5
0
1
+
PSEG1[2:0]
+
1
1
CANCTRL2
4
0
4
0
Time Quanta
Time Quanta
3
1
3
1
2
0
2
0
PSEG2[2:0]
$YFF088
$YFF089
MOTOROLA
1
0
1
0
D-91
0
0
0
0