參數(shù)資料
型號： MC68HCP11A1CP2
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP48
封裝： PLASTIC, DIP-48
文件頁數(shù)： 46/158頁
文件大?。?/td> 3803K
代理商： MC68HCP11A1CP2
INTRODUCTION
MC68HC11A8
1-2
TECHNICAL DATA
1
(SCI) and a separate synchronous serial peripheral interface (SPI) are included. The main
16-bit free-running timer system has three input capture lines, five output compare lines, and
a real-time interrupt function. An 8-bit pulse accumulator subsystem can count external
events or measure external periods.
Self monitoring circuitry is included on-chip to protect against system errors. A computer op-
erating properly (COP) watchdog system protects against software failures. A clock monitor
system generates a system reset in case the clock is lost or runs too slow. An illegal opcode
detection circuit provides a non-maskable interrupt if an illegal opcode is detected.
Two software controlled operating modes, WAIT and STOP, are available to conserve addi-
tional power.
Figure 1-1 Block Diagram
1.3 Programmer’s Model
In addition to being able to execute all M6800 and M6801 instructions, the MC68HC11A8 al-
lows execution of 91 new opcodes. Figure 1-2 shows the seven CPU registers which are
available to the programmer.
SPI
A/D CONVERTER
SCI
PORT D
CONTROL
EXTAL
XTAL
E
OSCILLATOR
CLOCK LOGIC
INTERRUPT LOGIC
MODA/
LIR
MODB/
VSTBY
TIMER
SYSTEM
CPU
COP
PULSE
ACCUMULATOR
STROBE AND HANDSHAKE
PORT B
PB7/A15
PB6/A14
PB5/A13
PB4/A12
PB3/A11
PB2/A10
PB1/A9
PB0/A8
PORT C
PC7/A7/D7
PC6/A6/D6
PC5/A5/D5
PC4/A4/D4
PC3/A3/D3
PC2/A2/D2
PC1/A1/D1
PC0/A0/D0
STRB/R/W
STRA/AS
PD5/SS
PD4/SCK
PD3/MOSI
PD2/MISO
PD1/TxD
PD0/RxD
PORT E
*PE7/AN7 *PE6/AN6 *PE5/AN5 *PE4/AN4
PE3/AN3
PE2/AN2
PE1/AN1
PE0/AN0
CONTROL
PORT A
PA7/PAI/OC1
PA6/OC2/OC1
PA5/OC3/OC1
PA4/OC4/OC1
PA3/OC5/OC1
PA2/IC1
PA1/IC2
PA0/IC3
BUS EXPANSION
PARALLEL I/O
ADDRESS
ADDRESS/DATA
R/W
AS
SS
SCK
PERIODIC
INTERRUPT
MODE
CONTROL
XIRQ
IRQ
RESET
MOSI
MISO
* NOT BONDED ON 48-PIN VERSION.
256 BYTES RAM
512 BYTES EEPROM
8 KBYTES ROM
VRL
VRH
VSS
VDD
TxD
RxD
A8 BLOCK
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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