HD6432621 Hitachi, HD6432621 Datasheet - Page 541
HD6432621
Manufacturer Part Number
HD6432621
Description
(HD64F262x Series) 16-Bit Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD6432621.pdf
(1069 pages)
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14.2.4
In smart card interface mode, the function of bits 1 and 0 of SCR changes when bit 7 of the serial
mode register (SMR) is set to 1.
Bits 7 to 2—Operate in the same way as for the normal SCI.
For details, see section 13.2.6, Serial Control Register (SCR).
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.
In smart card interface mode, in addition to the normal switching between clock output enabling
and disabling, the clock output can be specified as to be fixed high or low.
SMIF
0
1
1
1
1
1
1
Bit
Initial value :
R/W
SCMR
Serial Control Register (SCR)
C/A, GM
See the SCI
0
0
1
1
1
1
:
:
SMR
R/W
TIE
7
0
CKE1
0
0
0
0
1
1
R/W
RIE
6
0
SCR Setting
R/W
CKE0
0
1
0
1
0
1
TE
5
0
R/W
RE
4
0
SCK Pin Function
Operates as port I/O pin
Outputs clock as SCK output pin
Operates as SCK output pin, with output fixed
low
Outputs clock as SCK output pin
Operates as SCK output pin, with output fixed
high
Outputs clock as SCK output pin
MPIE
R/W
3
0
TEIE
R/W
2
0
CKE1
R/W
1
0
CKE0
R/W
0
0
497
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