M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 169

• 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

7.2 Block description
Figure 7.2.1 shows the block diagram of Serial I/O. Registers relevant to Serial I/O are described below.
Fig. 7.2.1 Block diagram of Serial I/O
CTS
i
/ RTS
CLK
RxD
n: Values set in UARTi baud rate register (BRGi)
i
i
i
f
512
f
f
16
64
f
2
BRG count source
select bits
Clock synchronous
(internal clock selected)
1 / (n+1)
BRGi
1/16
1/16
1/2
7702/7703 Group User’s Manual
(external clock selected)
(internal clock selected)
synchronous
Clock synchronous
synchronous
Clock synchronous
UART
Clock
UART
Clock
Transmit control
control circuit
Receive
circuit
0
0
0
0
0
0
Data bus (odd)
Data bus (even)
Transfer clock
Transfer clock
0
D
D
8
8
UARTi transmit register
D
UARTi receive register
D
7
7
D
D
6
6
D
D
Data bus (odd)
Data bus (even)
7.2 Block description
5
5
D
D
4
4
SERIAL I/O
D
D
3
3
D
D
2
2
D
D
1
1
D
D
0
0
UARTi receive
buffer register
UARTi transmit
buffer register
TxD
i
7–3