參數(shù)資料
型號： MC68CK338CPV14
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 14.4 MHz, MICROCONTROLLER, PQFP144
封裝： PLASTIC, TQFP-144
文件頁數(shù)： 2/133頁
文件大?。?/td> 944K
代理商： MC68CK338CPV14
MOTOROLA
MC68CK338
10
MC68CK338TS/D
2.5 Signal Function
RESET
SIML
Input/Output
0
RMC
SIML
Output
0
R/W
SIML
Output
0
RXD
QSM
Input
—
SCK
QSM
Input/Output
—
SIZ[1:0]
SIML
Output
—
SS
QSM
Input
0
TSC
SIML
Input
—
TXD
QSM
Output
—
XFC
SIML
Input
—
XRTC
CTM6
Output
—
XTAL
SIML
Output
—
Table 6 MCU Signal Function
Signal Name
Mnemonic
Function
Address Bus
ADDR[23:0]
24-bit address bus
Address Strobe
AS
Indicates that a valid address is on the address bus
Autovector
AVEC
Requests an automatic vector during interrupt acknowledge
Bus Error
BERR
Signals a bus error to the CPU
Bus Grant
BG
Indicates that the MCU has relinquished the bus
Bus Grant
Acknowledge
BGACK
Indicates that an external device has assumed bus mastership
Breakpoint
BKPT
Signals a hardware breakpoint to the CPU
Bus Request
BR
Indicates that an external device requires bus mastership
System Clockout
CLKOUT
System clock output
Chip Selects
CS[10:0]
Select external devices at programmed addresses
Boot Chip Select
CSBOOT
Chip select for external boot startup ROM
Configurable Timer
Double-Action
CTD[29:26],
CTD[10:4]
Double-action submodule (DASM) signals.
Can also be used as general purpose I/O pins
Configurable Timer
Modulus Counter
Load
CTM31L
External load for modulus counter.
Can also be used as general purpose input
RTC Configurable
Timer Oscillator
EXRTC, XRTC
CTM real time clock oscillator input/output
Configurable Timer
Port Input/Output
CTIO[5:0]
General-purpose I/O pins
Configurable Timer
Single-Action
CTS24[B:A]
CTS18[B:A]
CTS14[B:A]
Single-action submodule (SASM) signals.
Can also be used as general purpose I/O pins
Crystal Oscillator
EXTAL, XTAL
Connections for clock synthesizer circuit reference; a crystal or an
external oscillator can be used
Data Bus
DATA[15:0]
16-bit data bus
Table 5 MCU Signal Characteristics (Continued)
Signal Name
MCU Module
Signal Type
Active State
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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