hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 385

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Bit 2—Transmit End Interrupt Enable (TEIE)
Bit 2 selects enabling or disabling of the transmit end interrupt request (TEI) if there is no valid
transmit data in TDR when MSB data is to be sent.
Bit 2
TEIE
0
1
Note: * TEI can be released by clearing bit TDRE to 0 and clearing bit TEND to 0 in SSR, or by
Bits 1 and 0—Clock Enable 1 and 0 (CKE1, CKE0)
Bits 1 and 0 select the clock source and enabling or disabling of clock output from the SCK
The combination of CKE1 and CKE0 determines whether the SCK
a clock output pin, or a clock input pin.
The CKE0 bit setting is only valid in case of internal clock operation (CKE1 = 0) in asynchronous
mode. In synchronous mode, or when external clock operation is used (CKE1 = 1), bit CKE0
should be cleared to 0.
After setting bits CKE1 and CKE0, set the operating mode in the serial mode register (SMR).
For details on clock source selection, see table 10.9 in section 10.3.1, Overview.
Bit 1
CKE1
0
0
1
1
Notes: 1. Initial value
2. A clock with the same frequency as the bit rate is output.
3. Input a clock with a frequency 16 times the bit rate.
clearing bit TEIE to 0.
Bit 0
CKE0
0
1
0
1
Description
Transmit end interrupt request (TEI) disabled
Transmit end interrupt request (TEI) enabled *
Communication Mode
Asynchronous
Synchronous
Asynchronous
Synchronous
Asynchronous
Synchronous
Asynchronous
Synchronous
Clock Source
Internal clock
Internal clock
Reserved
External clock
External clock
Reserved
Internal clock
Reserved
Description
Section 10 Serial Communication Interface
Rev. 7.00 Mar 10, 2005 page 343 of 652
32
pin functions as an I/O port,
SCK
Clock output *
Clock input *
I/O port *
Serial clock output *
Serial clock input
32
Pin Function
REJ09B0042-0700
1
3
(initial value)
2
1
32
pin.