- 您现在的位置：买卖IC网 > PDF目录80462 > MC68HC11A0CP3 (FREESCALE SEMICONDUCTOR INC) 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PDIP48 PDF资料下载
参数资料
| 型号： | MC68HC11A0CP3 |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PDIP48 |
| 封装： | PLASTIC, DIP-48 |
| 文件页数： | 110/158页 |
| 文件大小： | 3803K |
| 代理商： | MC68HC11A0CP3 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页当前第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页第137页第138页第139页第140页第141页第142页第143页第144页第145页第146页第147页第148页第149页第150页第151页第152页第153页第154页第155页第156页第157页第158页
SERIAL COMMUNICATIONS INTERFACE
MOTOROLA
TECHNICAL DATA
5-11
5
NF — Noise Flag
The noise flag bit is set if there is noise on any of the received bits, including the start
and stop bits. The NF bit is not set until the RDRF flag is set. The NF bit is cleared
when the SCSR is read (with NF set), followed by a read of the SCDR.
FE — Framing Error
The framing error bit is set when no stop bit was detected in the received data charac-
ter. The FE bit is set at the same time as the RDRF is set. If the byte received causes
both framing and overrun errors, the processor will only recognize the overrun error.
The framing error flag inhibits further transfer of data into the SCDR until it is cleared.
The FE bit is cleared when the SCSR is read (with FE equal to one) followed by a read
of the SCDR.
Bit 0 — Not Implemented
This bit always reads zero.
5.8.5 Baud Rate Register (BAUD)
The baud rate register selects the different baud rates which may be used as the rate
control for the transmitter and receiver. The SCP[0:1] bits function as a prescaler for
the SCR[0:2] bits. Together, these five bits provide multiple baud rate combinations for
a given crystal frequency.
TCLR — Clear Baud Rate Counters (Test)
This bit is used to clear the baud rate counter chain during factory testing. TCLR is
zero and cannot be set while in normal operating modes.
SCP1 and SCP0 — SCI Baud Rate Prescaler Selects
The E clock is divided by the factors shown in Table 5-1. This prescaled output pro-
vides an input to a divider which is controlled by the SCR2-SCR0 bits.
SCR2, SCR1, and SCR0 — SCI Baud Rate Selects
These three bits select the baud rates for both the transmitter and the receiver. The
prescaler output described above is further divided by the factors shown in Table 5-2.
7
6543210
$102B
TCLR
0
SCP1
SCP0
RCKB
SCR2
SCR1
SCR0
BAUD
RESET
00000
U
Table 5-1 First Prescaler Stage
SCP1
SCP0
Internal Processor Clock Divided By
00
1
01
3
10
4
11
13
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相关PDF资料 |
PDF描述 |
|---|---|
| MC68HC11E0CFU3 | 8-BIT, 3 MHz, MICROCONTROLLER, PQFP64 |
| MC68HC705C9AFS | 8-BIT, UVPROM, 2.1 MHz, MICROCONTROLLER |
| MC68HC908GZ60CFA | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP48 |
| MC68HRC705J5ACDWR3 | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO20 |
| MC68LNC705C9ACFN | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQCC44 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC68HC11A0FB | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers |
| MC68HC11A0FB1 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers |
| MC68HC11A0FB3 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers |
| MC68HC11A0FB4 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers |
| MC68HC11A0FN | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers |
发布紧急采购，3分钟左右您将得到回复。