E62655RUSB Renesas Electronics America, E62655RUSB Datasheet - Page 626

• Manufacturer Part Number: E62655RUSB
• Description: EMULATOR BASE H8S/2655R W/USB
• Manufacturer: Renesas Electronics America
• Type: Microcontrollerr

Specifications of E62655RUSB

• Contents: E6000 Emulator Unit and 4 Logic Probes
• For Use With/related Products: H8S/2655R
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Section 14 Serial Communication Interface (SCI)
Bits 1 and 0—Clock Enable 1 and 0 (CKE1, CKE0): These bits are used to select the SCI clock
source and enable or disable clock output from the SCK pin. The combination of the CKE1 and
CKE0 bits determines whether the SCK pin functions as an I/O port, the serial clock output pin, or
the serial clock input pin.
The setting of the CKE0 bit, however, is only valid for internal clock operation (CKE1 = 0) in
asynchronous mode. The CKE0 bit setting is invalid in clocked synchronous mode, and in the case
of external clock operation (CKE1 = 1). Note that the SCI’s operating mode must be decided using
SMR before setting the CKE1 and CKE0 bits.
For details of clock source selection, see table 14.9.
Bit 1
CKE1
0
1
Notes: 1. Initial value
14.2.7
Note:
Rev. 5.00 Sep 14, 2006 page 596 of 1060
REJ09B0331-0500
Bit
Initial value
R/W
2. Outputs a clock of the same frequency as the bit rate.
3. Inputs a clock with a frequency 16 times the bit rate.
* Only 0 can be written, to clear the flag.
Serial Status Register (SSR)
Bit 0
CKE0
0
1
0
1
:
:
:
Description
Asynchronous mode
Clocked synchronous
mode
Asynchronous mode
Clocked synchronous
mode
Asynchronous mode
Clocked synchronous
mode
Asynchronous mode
Clocked synchronous
mode
R/(W) *
TDRE
7
1
R/(W) *
RDRF
6
0
R/(W) *
ORER
5
0
Internal clock/SCK pin functions as I/O port *
Internal clock/SCK pin functions as serial clock
output
Internal clock/SCK pin functions as clock output *
Internal clock/SCK pin functions as serial clock
output
External clock/SCK pin functions as clock input *
External clock/SCK pin functions as serial clock
input
External clock/SCK pin functions as clock input *
External clock/SCK pin functions as serial clock
input
R/(W) *
FER
4
0
R/(W) *
PER
3
0
TEND
R
2
1
MPB
R
1
0
MPBT
R/W
0
0
1
3
3
2