Port Dl; Table 20-17: Alternate Function Pins And Port Types Of Port Dl - NEC V850E/PH2 User Manual

20.3.14 Port DL

Port DL is a 16-bit I/O port that can be set to input or output mode in 1-bit units. When the higher 8 bits
of port DL are used as port DLH (PDLH) and the lower 8 bits as port DLL (PDLL), port DL becomes two
8-bit ports that can be set in the input or output mode in 1-bit units.
(1) Functions
• Input/output data can be specified in 1-bit units by using the port register DL (PDL).
• Input or output mode can be set in 1-bit units by using the port mode register DL (PMDL).
• Port mode or control mode (for alternate function) can be specified in 1-bit units by using the
port mode control register DL (PMCDL).

Table 20-17: Alternate Function Pins and Port Types of Port DL

Port
Port DL PDL0
to
PDL15
Note: Alternate function not available on μPD70F3447
On the μPD70F31187, in single-chip mode 1 or in ROM-less mode, this port has exter-
Caution:
nal data bus function only. Reprogramming of port DL to port mode is not possible in
these modes. Reading and writing of the port register PDL and port mode register
PMDL is possible but has no effect. Reading of the port mode control register PMCDL
is possible and the result is always FFFFH. Writing of the port mode control register
PMCDL is not possible.
Chapter 20 Port Functions
Alternate Function
Note
D0 to D15 External data bus
User's Manual U16580EE3V1UD00
Remark
Note
Port Type
4C
945