M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 178

• 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. 7.2.9 Contents of UARTi receive buffer register when reception is completed
7–12
The UARTi receive register is used to convert serial data which is input to the RxD
This register takes in the input signal to the RxD
time.
The UARTi receive buffer register is used to read out receive data. When reception is completed, receive
data which is taken in the UARTi receive register is automatically transferred to the UARTi receive buffer
register. The contents of UARTi receive buffer register is updated when the next data is ready before
reading out the data which has been transferred to the UARTi receive buffer register (i.e., an overrun error
occurs).
The UARTi receive buffer register is initialized by setting the receive enable bit (bit 2 at addresses 35
3D
Figure 7.2.9 shows the contents of UARTi receive buffer register when reception is completed.
16
) to “1” after clearing it to “0.”
In UART mode
(Transfer data length : 9 bits)
In clock synchronous
serial I/O mode
In UART mode
(Transfer data length : 8 bits)
In UART mode
(Transfer data length : 7 bits)
7702/7703 Group User’s Manual
High-order byte
(addresses 37
b7
0
0
0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
Same value as bit
7 in low-order byte
Same value as bit
6 in low-order byte
i
pin synchronously with the transfer clock, one bit at a
16
, 3F
16
)
b0
b7
Low-order byte
(addresses 36
Receive data (9 bits)
Receive data (8 bits)
Receive data (7 bits)
16
, 3E
i
16
pin into parallel data.
)
b0
16
,