參數(shù)資料
型號(hào): UPD78218A
廠商: NEC Corp.
元件分類: 8位微控制器
英文描述: 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash
中文描述: 8位微控制器與2/4/8K字節(jié)在系統(tǒng)可編程閃存
文件頁數(shù): 31/66頁
文件大小: 510K
代理商: UPD78218A
31
μ
PD78217A, 78218A
4.1.4
Macro Service Application Examples
(1)
Transmit operation of serial interface
Whenever the macro service request INTSR is generated, the receive data is transferred to the memory
from RXB. When the data n (last byte) is transferred to the memory (the receive data storage buffer becomes
empty), the vectored interrupt request INTSR is generated.
Whenever the macro service request INTST is generated, the next transmit data is transferred to TXS from
the memory. When the data n (last byte) is transferred to TXS (the transmit data storage buffer becomes
empty), a vectored interrupt request INTST is generated.
(2)
Receive operation of serial interface
Data n
Data n–1
Data 2
Data 1
Transmit Shift Register
Transmission Control
T
X
D
INTST
TXS (SFR)
Internal Bus
Transmit Data Storage Buffer (Memory)
Data n
Data n–1
Data 2
Data 1
Internal Bus
Receive Shift Register
Receive Control
R
X
D
INTSR
RXB (SFR)
Receive Buffer
Receive Data Storage Buffer (Memory)
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