MC68340AG25E Freescale Semiconductor, MC68340AG25E Datasheet - Page 121

• Manufacturer Part Number: MC68340AG25E
• Description: IC MPU 32BIT 25MHZ 144-LQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68340AG25E

• Processor Type: M683xx 32-Bit
• Speed: 25MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 144-LQFP
• Controller Family/series: 68K
• Core Size: 32 Bit
• No. Of I/o's: 16
• Cpu Speed: 25MHz
• No. Of Timers: 2
• Embedded Interface Type: UART
• Digital Ic Case Style: LQFP
• Rohs Compliant: Yes
• Processor Series: M683xx
• Core: CPU32
• Maximum Clock Frequency: 25 MHz
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Details

LOC—Loss of Clock Reset
SYS—System Reset
4.3.2.4 SOFTWARE INTERRUPT VECTOR REGISTER (SWIV). The SWIV contains the
8-bit vector that is returned by the SIM40 during an IACK cycle in response to an interrupt
generated by the software watchdog. This register can be read or written at any time. This
register is set to the uninitialized vector, $0F, at reset.
4.3.2.5 SYSTEM PROTECTION CONTROL REGISTER (SYPCR). The SYPCR controls
the system monitors, the prescaler for the software watchdog, and the bus monitor timing.
This register can be read at any time, but can be written only once after reset.
SWE—Software Watchdog Enable
SWRI—Software Watchdog Reset/Interrupt Select
4-24
See 4.2.2.5 Software Watchdog for more information.
1 = The last reset was caused by a loss of frequency reference to the clock
1 = The last reset was caused by the CPU32 executing a RESET instruction. The
1 = Software watchdog is enabled.
0 = Software watchdog is disabled.
1 = Software watchdog causes a system reset.
0 = Software watchdog causes a level 7 interrupt to the CPU32.
synthesizer. This reset can only occur if the RSTEN bit in the SYNCR is set and
the VCO is enabled.
system reset does not load a reset vector or affect any internal CPU32 registers,
SIM40 configuration registers, or the MCR in each internal peripheral module
(DMA, timers, and serial modules). It will, however, reset external devices and all
other registers in the peripheral modules.
SWIV
SYPCR
RESET:
RESET:
SWIV7
SWE
Freescale Semiconductor, Inc.
0
0
7
7
For More Information On This Product,
SWIV6
SWRI
0
0
6
6
MC68340 USER’S MANUAL
SWIV5
Go to: www.freescale.com
SWT1
0
0
5
5
SWIV4
SWT0
0
0
4
4
SWIV3
DBFE
1
0
3
3
SWIV2
Supervisor Only
Supervisor Only
BME
1
0
2
2
SWIV1
BMT1
1
0
1
1
$020
SWIV0
$021
BMT0
1
0
0
0
MOTOROLA