HD6433935 Hitachi, HD6433935 Datasheet - Page 278

• Manufacturer Part Number: HD6433935
• Description: 8-Bit MICROCONTROLLER
• Manufacturer: Hitachi

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:
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 10-4 in 10.1.3, Operation.
Bit 1
CKE1
0
0
1
1
Notes: 1. Initial value
266
*
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.
Bit 0
CKE0
0
1
0
1
TEI can be released by clearing bit TDRE to 0 and clearing bit TEND to 0 in SSR, or by
clearing bit TEIE to 0.
Description
Transmit end interrupt request (TEI) disabled
Transmit end interrupt request (TEI) enabled*
Description
Communication Mode
Asynchronous
Synchronous
Asynchronous
Synchronous
Asynchronous
Synchronous
Asynchronous
Synchronous
Clock Source
Internal clock
Internal clock
Internal clock
Reserved
External clock
External clock
Reserved
Reserved
3X
pin functions as an I/O port,
SCK
I/O port*
Serial clock output*
Clock output*
Clock input*
Serial clock input
3X
Pin Function
1
(initial value)
3
2
3X
1
pin.