upd78f0103hmca1-5a4-a Renesas Electronics Corporation., upd78f0103hmca1-5a4-a Datasheet - Page 209

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upd78f0103hmca1-5a4-a

Manufacturer Part Number
upd78f0103hmca1-5a4-a
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
(4) Port mode register 1 (PM1)
Cautions 1. When the internal oscillation clock is selected as the clock to be supplied to the CPU, the
Remarks 1. f
This register sets port 1 input/output in 1-bit units.
When using the P10/TxD0/SCK10 pin for serial interface data output, clear PM10 to 0 and set the output latch of
P10 to 1.
Set PM11 to 1 when using the P11/RxD0/SI10 pin as a serial interface data input pin. The output latch of P11 at
this time 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.
Address: FF21H
Symbol
PM1
2. Make sure that bit 6 (TXE0) and bit 5 (RXE0) of the ASIM0 register = 0 when rewriting the
3. The baud rate value is the output clock of the 5-bit counter divided by 2.
2. f
3. k: Value set by the MDL04 to MDL00 bits (k = 8, 9, 10, ..., 31)
4. ×: Don’t care
5. Figures in parentheses apply to operation at f
6. TMC506: Bit 6 of 8-bit timer mode control register 50 (TMC50)
clock of the internal oscillator is divided and supplied as the count clock. If the base clock is
the internal oscillation clock, the operation of serial interface UART0 is not guaranteed.
MDL04 to MDL00 bits.
PM17
PM1n
TMC501: Bit 1 of TMC50
XCLK0
X
CHAPTER 11 SERIAL INTERFACE UART0 (
: High-speed system clock oscillation frequency
7
0
1
After reset: FFH
: Frequency of base clock selected by the TPS01 and TPS00 bits
Output mode (output buffer on)
Input mode (output buffer off)
PM16
6
Figure 11-5. Format of Port Mode Register 1 (PM1)
PM15
5
R/W
P1n pin I/O mode selection (n = 0 to 7)
User’s Manual U16846EJ3V0UD
PM14
4
PM13
3
X
PD78F0102H AND 78F0103H ONLY)
= 10 MHz
PM12
2
PM11
1
PM10
0
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