UPD70F3208 Datasheet, PDF (254/757 Pages) NEC – 32-Bit Single-Chip Microcontrollers

CHAPTER 4 PORT FUNCTIONS
(3) Block diagram (Port DL)
Figure 4-40. Block Diagram of PDL0 to PDL15
WRPMC
PMCDL
PMCDLn
WRPM
Output enable signal for
address/data bus
Output buffer OFF signal
PMDL
PMDLn
WRPORT
ADn output
Output latch
(PDLn)
Address
Input enable signal for
address/data bus
RD
ADn input
Remarks 1. PMDL: Port DL mode register
PMCDL: Port DL mode control register
RD: Port DL read signal
WR: Port DL write signal
2. n = 0 to 15
PDL0/AD0,
PDL1/AD1,
PDL2/AD2,
PDL3/AD3,
PDL4/AD4,
PDL5/AD5,
PDL6/AD6,
PDL7/AD7,
PDL8/AD8,
PDL9/AD9,
PDL10/AD10,
PDL11/AD11,
PDL12/AD12,
PDL13/AD13,
PDL14/AD14,
PDL15/AD15
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User’s Manual U15862EJ3V0UD