參數(shù)資料
型號(hào)： M34559G6FP
元件分類： 微控制器/微處理器
英文描述： 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP52
封裝： 10 X 10 MM, 0.65 MM PITCH, PLASTIC, LQFP-52
文件頁數(shù)： 60/93頁
文件大?。?/td> 1810K
代理商： M34559G6FP
CLRC663
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Preliminary data sheet
COMPANY PUBLIC
Rev. 3.1 — 26 September 2011
171131
69 of 126
NXP Semiconductors
CLRC663
Contactless reader IC
Remark: To send more bytes in one data stream the NSS signal must be LOW during the
send process. To send more than one data stream the NSS signal must be HIGH between
each data stream.
10.3 UART Interface
10.3.1 Selection of the transfer speeds
The internal UART interface is compatible to a RS232 serial interface.
Table 213 “Selectable transfer speeds” describes examples for different transfer speeds
and relevant register settings. The resulting transfer speed error is less than 1.5 % for all
described transfer speeds. The default transfer speed is 115.2 kbit/s.
To change the transfer speed, the host controller has to write a value for the new transfer
speed to the register SerialSpeedReg. The bits BR_T0 and BR_T1 define factors to set
the transfer speed in the SerialSpeedReg.
Table 212 “Settings of BR_T0 and BR_T1” describes the settings of BR_T0 and BR_T1.
Fig 13. Connection to host with SPI
001aaj641
tSCKL
tSCKH
tSCKL
tDQXCH
tDSHQX
tDQXCH
th(SCKL-Q)
tCLSH
SCK
MOSI
MISO
MSB
LSB
NSS
Table 212. Settings of BR_T0 and BR_T1
BR_T0
01234567
factor BR_T0
1124816
32
64
range BR_T1
1 to 32
33 to 64
Table 213: Selectable transfer speeds
Transfer speed (kbit/s)
Serial SpeedReg
Transfer speed accuracy (%)
decimal
hexadecimal
7.2
250
FAh
0.25
9.6
235
EBh
0.32
14.4
218
DAh
0.25
19.2
203
CBh
0.32
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