tmp89fm82t TOSHIBA Semiconductor CORPORATION, tmp89fm82t Datasheet - Page 140

• Manufacturer Part Number: tmp89fm82t
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

8.4
Serial Interface Selecting Function
RA000
8.4
assignment can be changed. By this select function, total two out of three functions, i.e. one of SIO0, UART0 and one
of SEI1, UART1 can be used at the same time.
function.
UART0
UART1
TCA0
TCA1
Note 1: In order to use serial interface, it is needed to set not only SERSELand SRESEL2 resisters, but also I/O port resisters.
Note 2: Port7 do not have a open drain output function, In case P74,P75 is assigned as UART0/SIO0, SO0,TXD0 output become
Serial Interface Selecting Function
On the TMP89FM82T, the built-in serial interface (SIO, UART and SEI) communication pins and interrupt source
The input pins of the 16-bit timer counter A0,A1 inputs (TCA0,TCA1 inputs) can be changed by using this selecting
SIO0
SEI
Refer : 1.3 I/O port resister for detail.
CMOS level.
Interface select
SERSEL
<SRSEL0>
SERSEL
<SRSEL0>
Selector
Selector
0 ∗
1 ∗
∗ 0
∗ 1
Figure 8-11 Serial Interface Selecting Function
S
S
SERSEL
<SRSEL2>
SERSEL
<TCA0SEL>
SERSEL2
<TCA1SEL>
Port select
Selector
Selector
Selector
S
S
S
00
01
10
00
01
10
1
0
Page 124
Port
Port
Port
Port
Port
P74 (TxD0 / SO0)
P75 (RxD0 / SI0)
P22 (SCLK0 / INT4)
P20 (TxD0 / SO0)
P21 (RxD0 / SI0 / TCA0 / TCA1)
P24 (SECLK)
P25 (MOSI / TXD1)
P26 (MISO / RXD1 / TCA0 / TCA1)
P70 (TCA0)
P71 (TCA1)
P23 (SS / INT3)
TMP89FM82T