MC68331CEH20 Freescale Semiconductor, MC68331CEH20 Datasheet - Page 119

IC MCU 32BIT 20MHZ 132-PQFP

MC68331CEH20

Manufacturer Part Number
MC68331CEH20
Description
IC MCU 32BIT 20MHZ 132-PQFP
Manufacturer
Freescale Semiconductor
Series
M683xxr
Datasheets

Specifications of MC68331CEH20

Core Processor
CPU32
Core Size
32-Bit
Speed
20MHz
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
20MHz
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
20 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
Cpu Family
68K/M683xx
Device Core
ColdFire
Device Core Size
32b
Frequency (max)
20MHz
Program Memory Size
Not Required
Total Internal Ram Size
80Byte
# I/os (max)
18
Number Of Timers - General Purpose
1
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
132
Package Type
PQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Ram Size
-
Program Memory Size
-
Data Converters
-
Lead Free Status / Rohs Status
 Details

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC68331CEH20
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC68331CEH20
Manufacturer:
NXP
Quantity:
14
Part Number:
MC68331CEH20
Manufacturer:
NXP
Quantity:
22
Part Number:
MC68331CEH20
Manufacturer:
NXP
Quantity:
36
Part Number:
MC68331CEH20
Manufacturer:
FREESCAL
Quantity:
36
Part Number:
MC68331CEH20
Manufacturer:
FREESCLA
Quantity:
20 000
5.10.2.1 Enabling BDM
5.10.2.2 BDM Sources
MC68331
USER’S MANUAL
Accidentally entering BDM in a non-development environment can lock up the CPU32
when the serial command interface is not available. For this reason, BDM is enabled
during reset via the breakpoint (BKPT) signal.
BDM operation is enabled when BKPT is asserted (low), at the rising edge of RESET.
BDM remains enabled until the next system reset. A high BKPT signal on the trailing
edge of RESET disables BDM. BKPT is latched again on each rising transition of RE-
SET. BKPT is synchronized internally, and must be held low for at least two clock cy-
cles prior to negation of RESET.
BDM enable logic must be designed with special care. If hold time on BKPT extends
into the first bus cycle following reset, the bus cycle could inadvertently be tagged with
a breakpoint. Refer to the SIM Reference Manual (SIMRM/AD) for timing information.
When BDM is enabled, any of several sources can cause the transition from normal
mode to BDM. These sources include external breakpoint hardware, the BGND in-
struction, a double bus fault, and internal peripheral breakpoints. If BDM is not enabled
when an exception condition occurs, the exception is processed normally. Table 5-3
summarizes the processing of each source for both enabled and disabled cases. As
shown in Table 5-3, the BKPT instruction never causes a transition into BDM.
BGND Instruction
Double Bus Fault
BKPT Instruction
TARGET
SYSTEM
Source
BKPT
Figure 5-8 Bus State Analyzer Configuration
Freescale Semiconductor, Inc.
For More Information On This Product,
Table 5-3 BDM Source Summary
CENTRAL PROCESSING UNIT
TARGET
Go to: www.freescale.com
MCU
Opcode Substitution/
Illegal Instruction
BDM Enabled
Background
Background
Background
BUS STATE
ANALYZER
Breakpoint Exception
Opcode Substitution/
Illegal Instruction
Illegal Instruction
BDM Disabled
Halted
1129A
5-19
5

Related parts for MC68331CEH20