upd78f0103hmca1-5a4-a Renesas Electronics Corporation., upd78f0103hmca1-5a4-a Datasheet - Page 265

• Manufacturer Part Number: upd78f0103hmca1-5a4-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

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(3) Port mode register 1 (PM1)
Cautions 1. When the internal oscillation clock is selected as the clock supplied to the CPU, the clock of
Note
Remarks 1. Figures in parentheses are for operation with f
This register sets port 1 input/output in 1-bit units.
When using P10/SCK10(/TxD0
output latch of P10 to 1.
When using P12/SO10 as the data output pin of the serial interface, clear PM12 and the output latches of P12 to
0.
When using P10/SCK10(/TxD0
data input pins, set PM10 and PM11 to 1. At this time, the output latches of P10 and P11 may be 0 or 1.
PM1 can be set by a 1-bit or 8-bit memory manipulation instruction.
RESET input sets this register to FFH.
Note
Address: FF21H
Symbol
PM1
µ
PD78F0102H and 78F0103H only.
µ
PD78F0102H and 78F0103H only.
2. f
2. Do not write to CSIC10 while CSIE10 = 1 (operation enabled).
3. To use P10/SCK10(/TxD0
4. The phase type of the data clock is type 1 after reset.
X
the internal oscillator is divided and supplied as the serial clock. At this time, the operation
of serial interface CSI10 is not guaranteed.
CSIC10 in the default status (00H).
PM17
PM1n
: High-speed system clock oscillation frequency
7
0
1
After reset: FFH
Output mode (output buffer on)
Input mode (output buffer off)
PM16
6
Figure 13-4. Format of Port Mode Register 1 (PM1)
Note
Note
CHAPTER 13 SERIAL INTERFACE CSI10
) as the clock input pins of the serial interface, and P11/SI10(/RxD0
) as the clock output pin of the serial interface, clear PM10 to 0 and set the
PM15
5
R/W
Note
P1n pin I/O mode selection (n = 0 to 7)
User’s Manual U16846EJ3V0UD
), P11/SI10(/RxD0
PM14
4
PM13
3
X
= 10 MHz
Note
), and P12/SO10 as general-purpose ports, set
PM12
2
PM11
1
PM10
0
Note
) as the
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