MB90480B Datasheet, PDF (40/124 Pages) Fujitsu Component Limited. – 16-bit Microcontroller

MB90480B/485B Series
(2) Block Diagram
Internal data bus
(MSB first) D0 to D7
D7 to D0 (LSB first)
Initial value
SIN1, SIN2
Transfer direction selection
SDR (Serial Data Register)
Read
Write
SOT1, SOT2
SCK1, SCK2
Internal clock
Control circuit
Shift clock
counter
21
0
SMD2 SMD1 SMD0 SIE
SIR BUSY STOP STRT MODE BDS SOE SCOE
Interrupt
request
Internal data bus
40