CHAPTER 4 PORT FUNCTIONS
Preliminary User’s Manual U15905EJ1V0UD
141
(3) Block diagram
Figure 4-18. Block Diagram of P90 and P91
Internal bus
WR
PMC
RD
Address
A0, A1 output
Output buffer
OFF signal
WR
PORT
P90/A0,
P91/A1
PMC9n
P9n
Selector
Selector
Selector
Selector
WR
PM
PM9n
WR
PU
PU9n
PMC9
P9
PM9
PU9
EV
DD
P-ch
Remarks 1.
P9:
Port
register
9
PM9: Port mode register 9
PMC9: Port mode control register 9
PU9:
Pull-up resistor option register 9
Output buffer OFF signal: Signal that is active in the IDLE/STOP mode
2.
n = 0 or 1
Содержание V850ES/SA2 UPD703201
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