As Figure 23-17 shows, the UARTn transmitter and receiver can use the " />
鍙冩暩(sh霉)璩囨枡
鍨嬭櫉锛� MCF5280CVM80J
寤犲晢锛� Freescale Semiconductor
鏂囦欢闋佹暩(sh霉)锛� 376/766闋�
鏂囦欢澶�?銆�?/td> 0K
鎻忚堪锛� IC MPU RISC 80MHZ 256-MAPBGA
妯欐簴鍖呰锛� 90
绯诲垪锛� MCF528x
鏍稿績铏曠悊鍣細 Coldfire V2
鑺珨灏哄锛� 32-浣�
閫熷害锛� 80MHz
閫i€氭€э細 CAN锛孍BI/EMI锛屼互澶恫(w菐ng)锛孖²C锛孲PI锛孶ART/USART
澶栧湇瑷倷锛� DMA锛孡VD锛孭OR锛孭WM锛學DT
杓稿叆/杓稿嚭鏁�(sh霉)锛� 150
绋嬪簭瀛樺劜鍣ㄩ鍨嬶細 ROMless
RAM 瀹归噺锛� 64K x 8
闆诲 - 闆绘簮 (Vcc/Vdd)锛� 2.7 V ~ 3.6 V
鏁�(sh霉)鎿�(j霉)杞夋彌鍣細 A/D 8x10b
鎸暕鍣ㄥ瀷锛� 澶栭儴
宸ヤ綔婧害锛� -40°C ~ 85°C
灏佽/澶栨锛� 256-LBGA
鍖呰锛� 鎵樼洡
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730闋�绗�731闋�绗�732闋�绗�733闋�绗�734闋�绗�735闋�绗�736闋�绗�737闋�绗�738闋�绗�739闋�绗�740闋�绗�741闋�绗�742闋�绗�743闋�绗�744闋�绗�745闋�绗�746闋�绗�747闋�绗�748闋�绗�749闋�绗�750闋�绗�751闋�绗�752闋�绗�753闋�绗�754闋�绗�755闋�绗�756闋�绗�757闋�绗�758闋�绗�759闋�绗�760闋�绗�761闋�绗�762闋�绗�763闋�绗�764闋�绗�765闋�绗�766闋�
UART Modules
Freescale Semiconductor
23-17
23.4.1.1
Programmable Divider
As Figure 23-17 shows, the UARTn transmitter and receiver can use the following clock sources:
An external clock signal on the DTINn pin.
When not divided, DTINn provides a synchronous
clock; when divided by 16, it is asynchronous.
The internal bus clock supplies an asynchronous clock source divided by 32 and then divided by
the 16-bit value programmed in UBG1n and UBG2n. See Section 23.3.11, 鈥淯ART Baud Rate
The choice of DTIN or internal bus clock is programmed in the UCSR.
Figure 23-17. Clocking Source Diagram
NOTE
If DTINn is a clocking source for the timer or UART, that timer module
cannot use DTINn for timer input capture.
23.4.1.2
Calculating Baud Rates
The following sections describe how to calculate baud rates.
23.4.1.2.1
Internal Bus Clock Baud Rates
When the internal bus clock is the UART clocking source, it goes through a divide-by-32 prescaler and
then passes through the 16-bit divider of the concatenated UBG1n and UBG2n registers. The baud-rate
calculation is:
Eqn. 23-1
UART
On-Chip
TIN
梅 1
梅 16
16-bit
Divider
梅 32
TIN
Clocking sources programmed in UCSR
Timer Module
Internal
Tx
Rx
Rx Buffer
Tx Buffer
fsys
Bus Clock
URXDn
UTXDn
DTINn
DTOUTn
Baudrate
f
sys
32 x Divider
[]
------------------------------------
=
MCF5282 and MCF5216 ColdFire Microcontroller User鈥檚 Manual, Rev. 3
鐩搁棞PDF璩囨枡
PDF鎻忚堪
VI-214-CV-S CONVERTER MOD DC/DC 48V 150W
VE-2WX-CV-S CONVERTER MOD DC/DC 5.2V 150W
VE-2W0-CV-S CONVERTER MOD DC/DC 5V 150W
VE-21H-CV-S CONVERTER MOD DC/DC 52V 150W
JBXFD0G06MSSDPMR CONN PLUG 6POS STRAIGHT SOLDER
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鍙冩暩(sh霉)鎻忚堪
MCF5281CVF66 鍔熻兘鎻忚堪:IC MPU 32BIT 66MHZ 256-BGA RoHS:鍚� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 宓屽叆寮� - 寰帶鍒跺櫒锛� 绯诲垪:MCF528x 妯欐簴鍖呰:250 绯诲垪:56F8xxx 鏍稿績铏曠悊鍣�:56800E 鑺珨灏哄:16-浣� 閫熷害:60MHz 閫i€氭€�:CAN锛孲CI锛孲PI 澶栧湇瑷倷:POR锛孭WM锛屾韩搴﹀偝鎰熷櫒锛學DT 杓稿叆/杓稿嚭鏁�(sh霉):21 绋嬪簭瀛樺劜鍣ㄥ閲�:40KB锛�20K x 16锛� 绋嬪簭瀛樺劜鍣ㄩ鍨�:闁冨瓨 EEPROM 澶у皬:- RAM 瀹归噺:6K x 16 闆诲 - 闆绘簮 (Vcc/Vdd):2.25 V ~ 3.6 V 鏁�(sh霉)鎿�(j霉)杞夋彌鍣�:A/D 6x12b 鎸暕鍣ㄥ瀷:鍏ч儴 宸ヤ綔婧害:-40°C ~ 125°C 灏佽/澶栨:48-LQFP 鍖呰:鎵樼洡 閰嶇敤:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
MCF5281CVF80 鍔熻兘鎻忚堪:IC MPU 32BIT COLDF 256-MAPBGA RoHS:鍚� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 宓屽叆寮� - 寰帶鍒跺櫒锛� 绯诲垪:MCF528x 妯欐簴鍖呰:250 绯诲垪:56F8xxx 鏍稿績铏曠悊鍣�:56800E 鑺珨灏哄:16-浣� 閫熷害:60MHz 閫i€氭€�:CAN锛孲CI锛孲PI 澶栧湇瑷倷:POR锛孭WM锛屾韩搴﹀偝鎰熷櫒锛學DT 杓稿叆/杓稿嚭鏁�(sh霉):21 绋嬪簭瀛樺劜鍣ㄥ閲�:40KB锛�20K x 16锛� 绋嬪簭瀛樺劜鍣ㄩ鍨�:闁冨瓨 EEPROM 澶у皬:- RAM 瀹归噺:6K x 16 闆诲 - 闆绘簮 (Vcc/Vdd):2.25 V ~ 3.6 V 鏁�(sh霉)鎿�(j霉)杞夋彌鍣�:A/D 6x12b 鎸暕鍣ㄥ瀷:鍏ч儴 宸ヤ綔婧害:-40°C ~ 125°C 灏佽/澶栨:48-LQFP 鍖呰:鎵樼洡 閰嶇敤:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
MCF5281CVM66 鍔熻兘鎻忚堪:32浣嶅井鎺у埗鍣� - MCU MCF5281 V2CORE 256KFLASH RoHS:鍚� 鍒堕€犲晢:Texas Instruments 鏍稿績:C28x 铏曠悊鍣ㄧ郴鍒�:TMS320F28x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:32 bit 鏈€澶ф檪閻橀牷鐜�:90 MHz 绋嬪簭瀛樺劜鍣ㄥぇ灏�:64 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:26 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:2.97 V to 3.63 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:LQFP-80 瀹夎棰ㄦ牸:SMD/SMT
MCF5281CVM66J 鍔熻兘鎻忚堪:32浣嶅井鎺у埗鍣� - MCU V2CORE 256K FLASH RoHS:鍚� 鍒堕€犲晢:Texas Instruments 鏍稿績:C28x 铏曠悊鍣ㄧ郴鍒�:TMS320F28x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:32 bit 鏈€澶ф檪閻橀牷鐜�:90 MHz 绋嬪簭瀛樺劜鍣ㄥぇ灏�:64 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:26 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:2.97 V to 3.63 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:LQFP-80 瀹夎棰ㄦ牸:SMD/SMT
MCF5281CVM80 鍔熻兘鎻忚堪:32浣嶅井鎺у埗鍣� - MCU MCF5281 V2CORE 256KFLASH RoHS:鍚� 鍒堕€犲晢:Texas Instruments 鏍稿績:C28x 铏曠悊鍣ㄧ郴鍒�:TMS320F28x 鏁�(sh霉)鎿�(j霉)绺界窔瀵害:32 bit 鏈€澶ф檪閻橀牷鐜�:90 MHz 绋嬪簭瀛樺劜鍣ㄥぇ灏�:64 KB 鏁�(sh霉)鎿�(j霉) RAM 澶у皬:26 KB 鐗囦笂 ADC:Yes 宸ヤ綔闆绘簮闆诲:2.97 V to 3.63 V 宸ヤ綔婧害鑼冨湇:- 40 C to + 105 C 灏佽 / 绠遍珨:LQFP-80 瀹夎棰ㄦ牸:SMD/SMT