Datasheet

ManualsBrandsRENESAS ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller SSOP 10 8-Bit 10 MHz I/O number 7

CHAPTER 4 PORT FUNCTIONS

User’s Manual U18172EJ3V0UD

Figure 4-14. Format of Port Mode Control Register 2 (

PD78F920x only)

Address: FF84H, After reset: R/W

Symbol 7 6 5 4 3 2 1 0

PMC2 0 0 0 0 PMC23 PMC22 PMC21 PMC20

PMC2n Specification of operation mode (n = 0 to 3)

0 Port/alternate-function (except the A/D converter function) mode

1 A/D converter mode

Caution When PMC20 to PMC23 are set to 1, the port function on the P20/ANI0 to P23/ANI3 pins cannot

be used. Moreover, be sure to set the pull-up resistor option registers (PU20 to PU23) to 0 for the

pins set to A/D converter mode.

Table 4-4. Setting of Port Mode Register, Port Register (Output Latch), and Port Mode Control Register

When Alternate Function Is Used

Alternate-Function Pin

Port Name

Name I/O

PM×× P×× PMC2n

(n = 0 to 3)

Note

ANI0

Note

Input 1

TI000

Note

Input 1

P20

TOH1 Output 0 0 0

ANI1

Note

Input 1

TI010

Note

Input 1

TO00

Note

Output 0 0 0

P21

INTP0 Input 1

P22

ANI2

Note

Input 1

P23

ANI3

Note

Input 1

P32 INTP1 Input 1

× −

Note

PD78F920x only

Remark ×: don’t care

PM××: Port mode register, P××: Port register (output latch of port)

PMC2×: Port mode control register

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