參數(shù)資料
型號(hào)： μPD784218
廠商： NEC Corp.
英文描述： 8 /16 Bit Single Chip Microcontrollers(8/16位單片微控制器)
中文描述： 8 / 16位單片機(jī)微控制器（8 / 16位單片微控制器）
文件頁(yè)數(shù)： 50/70頁(yè)
文件大?。?/td> 271K
代理商： ΜPD784218
μ
PD784217,784218
50
9.5 Application Example of Macro Service
(1) Transmission of serial interface
Transmit data storage buffer (memory)
Data n
Data n–1
Data 1
Data 2
Internal bus
Transmit shift register
TXS1, TXS2(SFR)
Transmit control
TxD1, TxD2
INTST1, INTST2
Each time macro service requests INTST1 and INTST2 are generated, the next transmit data is transferred from
memory to TXS1 and TXS2. When data n (last byte) has been transferred to TXS1 and TXS2 (when the transmit
data storage buffer has become empty), vectored interrupt requests INTST1 and INTST2 are generated.
(2) Reception of serial interface
Receive data storage buffer (memory)
Data n
Data n–1
Data 1
Data 2
Internal bus
Receive shift register
RXB1, RXB2(SFR)
Reception control
INTSR1, INTSR2
RxD1, RxD2
Receive buffer register
Each time macro service requests INTSR1 and INTSR2 are generated, the receive data is transferred from RXB1
and RXB2 to memory. When data n (last byte) has been transferred to memory (when the receive data storage
buffer has become full), vectored interrupt requests INTSR1 and INTSR2 are generated.
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