參數(shù)資料
型號: MC68HC705J2S
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, UVPROM, 2.1 MHz, MICROCONTROLLER, CDIP20
封裝: WINDOWED, CERDIP-20
文件頁數(shù): 6/82頁
文件大?。?/td> 2545K
代理商: MC68HC705J2S
INTRODUCTION
1-2
Rev. 2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
One Time Programmable 20-Pin Small Outline Integrated Circuit (SOIC)
Windowed 20-Pin Cerdip
1.2 Structure
Figure 1-1 shows the organization of the MC68HC705J2 EPROM MCU.
Figure 1-1. MC68HC705J2 Block Diagram
NZ
RESET
POWER
OSCILLATOR
SRAM — 112 BYTES
USER EPROM — 2064 BYTES
OSC1
OSC2
DD
V
SS
V
PORT
A
PA5
PA6
PA7
PORT
B
PB0
PB1
PB2
PB3
PB4
PB5
DIVIDE
BY 2
15-STAGE
MULTIFUNCTION TIMER
COP TIMER
AND
ILLEGAL ADDRESS DETECT
ACCUMULATOR
M68HC05
CPU
fop
DATA
DIRECTION
B
RST
PA2
PA3
PA4
PA0
PA1
IRQ/VPP
70
INDEX REGISTER
70
STACK POINTER
70
PROGRAM COUNTER
11
0
CONDITION CODE REGISTER
70
5
111 H I
C
15
00000
0000000011
BOOTLOADER ROM — 239 BYTES
15
DATA
DIRECTION
A
F
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sc
a
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S
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ic
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to
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I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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