MC68331CEH25 Freescale Semiconductor, MC68331CEH25 Datasheet - Page 227

• Manufacturer Part Number: MC68331CEH25
• Description: IC MCU 32BIT 25MHZ 132-PQFP
• Manufacturer: Freescale Semiconductor
• Series: M683xxr

Specifications of MC68331CEH25

• Core Processor: CPU32
• Core Size: 32-Bit
• Speed: 25MHz
• Connectivity: EBI/EMI, SCI, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Type: ROMless
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 132-QFP
• Controller Family/series: 68K
• No. Of I/o's: 18
• Cpu Speed: 25MHz
• No. Of Timers: 1
• Embedded Interface Type: QSPI, SCI, UART
• No. Of Pwm Channels: 2
• Digital Ic Case Style: PQFP
• Rohs Compliant: Yes
• Processor Series: M683xx
• Core: CPU32
• Data Bus Width: 32 bit
• Data Ram Size: 80 B
• Interface Type: QSPI, SCI, UART
• Maximum Clock Frequency: 25 MHz
• Number Of Programmable I/os: 18
• Number Of Timers: 1
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Eeprom Size: -
• Ram Size: -
• Program Memory Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details

D.3.12 SYPCR — System Protection Control Register
SWE — Software Watchdog Enable
SWP — Software Watchdog Prescale
SWT[1:0] — Software Watchdog Timing
HME — Halt Monitor Enable
MC68331
USER’S MANUAL
15
RESET:
SYPCR controls system monitor functions, software watchdog clock prescaling, and
bus monitor timing. This register can be written once following power-on or reset.
This field selects software watchdog time-out period.
0 = Software watchdog disabled
1 = Software watchdog enabled
0 = Software watchdog clock not prescaled
1 = Software watchdog clock prescaled by 512
0 = Disable halt monitor function
1 = Enable halt monitor function
NOT USED
Freescale Semiconductor, Inc.
Table D-6 Software Watchdog Ratio
PFPAR Field
For More Information On This Product,
Table D-5 Port F Pin Assignments
PFPA7
PFPA6
PFPA5
PFPA4
PFPA3
PFPA2
PFPA1
PFPA0
SWP
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0
0
0
0
1
1
1
1
REGISTER SUMMARY
Port F Signal
8
SWT
PF7
PF6
PF5
PF4
PF3
PF2
PF1
PF0
00
01
10
11
00
01
10
11
SWE
7
1
MODCLK
SWP
Ratio
6
2
2
2
2
2
2
2
Control Signal
2
11
13
15
18
20
22
24
9
MODCLK
IRQ7
IRQ6
IRQ5
IRQ4
IRQ3
IRQ2
IRQ1
5
0
SWT
4
0
HME
3
0
BME
2
0
$YFFA21
1
0
BMT
D-19
0
0
D