M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 182

• Manufacturer Part Number: M37702E6BFS
• Description: EPROM MCU/8BIT CMOS EMULATION CH
• Manufacturer: Renesas Electronics America

Specifications of M37702E6BFS

• Accessory Type: Emulator EPROM MCU
• For Use With/related Products: 7702
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

SERIAL I/O
7.2 Block description
Fig. 7.2.13 Relationship between port P8 direction register and UARTi’s I/O pins
7–16
7.2.8 Port P8 direction register
I/O pins of UARTi are shared with port P8. When using pins P8
set the corresponding bits of the port P8 direction register to “0” to set these pins for the input mode. When
using pins P8
set as I/O pins of UARTi regardless of port P8 direction register’s contents. Figure 7.2.13 shows the
relationship between the port P8 direction register and UARTi’s I/O pins.
b7
b6
b5
b4
0
, P8
b3
b2
1
, P8
b1
3
b0
to P8
Port P8 direction register (Address 14
5
and P8
Bit
0
1
2
3
4
5
6
7
CLK
CLK
RxD
CTS
RxD
TxD
CTS
TxD
7
as I/O pins (CTS
7702/7703 Group User’s Manual
0
1
0
1
0
1
1
0
Corresponding pin
/
/
RTS
RTS
pin
pin
pin
pin
pin
pin
0
1
pin
pin
____ ____
i
/RTS
16
)
i
, CLK
1 : Output mode
When using pins P8
serial data input pins (RxD
set the corresponding bits to “0.”
0 : Input mode
2
and P8
i
, TxD
Functions
i
) of UARTi, these pins are forcibly
6
as serial data input pins (RxD
2
and P8
0
, RxD
6
as
1
),
At reset
0
0
0
0
0
0
0
0
RW
RW
RW
RW
RW
RW
RW
RW
RW
i
),