upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 294
upd70f3017ay
Manufacturer Part Number
upd70f3017ay
Description
V850/sa1tm 32-/16-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD70F3017AY.pdf
(492 pages)
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10.4.3
(1) Operation stop mode
294
UARTn has the following two operation modes.
•
•
(n = 0, 1)
This mode is used when serial transfers are not performed.
consumption.
In operation stop mode, pins can be used as normal ports.
(a) Register settings
After reset: 00H
ASIMn
Operation stop mode
Asynchronous serial interface (UART) mode
Operation stop mode settings are made via the TXEn and RXEn bits of asynchronous serial interface mode
register n (ASIMn).
Operations
Cautions 1. Do not switch the operation mode until after the current serial transmit/receive
TXEn
TXEn
0
7
2. Be sure to set bit 0 to 0.
operation has stopped.
Figure 10-24. Settings of ASIMn (Operation Stop Mode)
R/W
RXEn
RXEn
0
6
CHAPTER 10
Operation stop
User’s Manual U12768EJ4V1UD
PS1n
Address: FFFFF300H, FFFFF310H
5
Operation mode
SERIAL INTERFACE FUNCTION
PS0n
4
It can therefore be used to reduce power
CLn
3
Port function
RXDn/Pxx pin
function
SLn
2
ISRMn
Port function
1
TXDn/Pxx pin
function
0
0
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