72
Chapter 2
Pin Functions
User’s Manual U16580EE3V1UD00
(17) PCM0, PCM1, PCM6, PCM7 (Port CM) … I/O
Port CM is a 4-bit I/O port in which input or output can be set for each port pin individually.
Besides functioning as a port, in control mode, these pins operate as control signal input
Note
when
memory is expanded externally.
The operation mode can be specified by the port CM mode control register (PMCCM) to port or
control mode for each port pin individually.
(a) Port mode
PCM0, PCM1, PCM6, and PCM7 can be set to input or output in 1-bit units using the port CM
mode register (PMCM).
(b) Control mode
PCM0 can be set to port or control mode in 1-bit units using the PMCCM register.
(i) WAIT (Wait) … Input
Note
This is the control signal input pin at which an external data wait is inserted into the bus cycle.
The WAIT signal can be input asynchronously, and is sampled at the falling edge of the BCLK
signal. When the setup or hold time is terminated within the sampling timing, wait insertion
may not be executed.
(18) PCS0, PCS1, PCS3, PCS4 (Port CS) … I/O
Port CS is a 4-bit I/O port in which input or output can be set for each port pin individually.
Besides functioning as a port, in control mode, these pins operate as control signal outputs
Note
when
memory is expanded externally.
The operation mode can be specified by the port CS mode control register (PMCCS) to port or
control mode for each port pin individually.
(a) Port mode
PCS0, PCS1, PCS3, and PCS4 can be set to input or output in 1-bit units using the port CS mode
register (PMCS).
(b) Control mode
PCS0, PCS1, PCS3, and PCS4 can be set to port or control mode in 1-bit units using the PMCCS
register.
(i) CS0, CS1, CS3, CS4 (Chip select) … 3-state output
Note
These are the chip select signal output pins for the external memory or peripheral I/O
extension areas.
The CSn signal is assigned to the memory block n (n = 0, 1, 3, 4).
It becomes active while the bus cycle that accesses the corresponding memory block is
activated. In the idle state (TI), it becomes inactive.
Note:
not available on
μ
PD70F3447
Summary of Contents for MuPD70F3187
Page 6: ...6 Preface User s Manual U16580EE3V1UD00 ...
Page 16: ...16 User s Manual U16580EE3V1UD00 ...
Page 28: ...28 User s Manual U16580EE3V1UD00 ...
Page 32: ...32 User s Manual U16580EE3V1UD00 ...
Page 84: ...84 Chapter 2 Pin Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 144: ...144 Chapter 3 CPU Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO ...
Page 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00 ...
Page 969: ...969 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 970: ...970 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 ...
Page 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO ...
Page 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO ...
Page 1006: ...1006 Chapter 24 Flash Memory User s Manual U16580EE3V1UD00 MEMO ...
Page 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO ...
Page 1046: ...1046 Appendix A Index User s Manual U16580EE3V1UD00 MEMO ...
Page 1052: ...1052 User s Manual U16580EE3V1UD00 ...
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