MC68376BGMAB20 Freescale Semiconductor, MC68376BGMAB20 Datasheet - Page 332

• 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: -

PITR — Periodic Interrupt Timer Register
PIV[7:0] — Periodic Interrupt Vector
D.2.14 Periodic Interrupt Timer Register
PTP — Periodic Timer Prescaler Control
PITM[7:0] — Periodic Interrupt Timing Modulus
D.2.15 Software Watchdog Service Register
SWSR — Software Watchdog Service Register
D-14
MOTOROLA
NOTES:
15
15
0
0
RESET:
RESET:
This field specifies the periodic interrupt vector number supplied by the SIM when the
CPU32 acknowledges an interrupt request.
PITR specifies the prescaling and modulus value for the PIT. This register can be read
or written at any time.
This field determines the periodic interrupt rate. Use the following expressions to
calculate timer period.
When a fast reference frequency is used, the PIT period can be calculated as follows:
When an externally input clock frequency is used, the PIT period can be calculated as
follows:
1. Register shown with read value.
0 = Periodic timer clock is not prescaled.
1 = Periodic timer clock is prescaled by 512.
14
0
0
13
0
0
PIT Period
PIT Period
12
0
0
NOT USED
11
0
0
=
10
------------------------------------------------------------------------------------------------------------------------------------ -
0
0
=
128 PITM[7:0] 1 if PTP = 0, 512 if PTP = 1 4
---------------------------------------------------------------------------------------------------------------------
PITM[7:0] 1 if PTP = 0, 512 if PTP = 1 4
REGISTER SUMMARY
9
0
0
MODCLK
PTP
8
8
7
0
0
1
7
0
6
0
0
6
0
f
f
ref
ref
5
0
0
5
0
4
0
0
4
0
PITM[7:0]
3
0
0
3
0
USER’S MANUAL
2
0
0
2
0
MC68336/376
$YFFA24
$YFFA27
1
0
0
1
0
0
0
0
0
0