HD64F2149 Datasheet, PDF (472/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

Table 15.8 SMR Settings and Serial Transfer Format Selection
SMR Settings
SCI Transfer Format
Bit 7
C/A
0
1
Bit 6
CHR
0
1
0
1
—
Bit 2
MP
0
1
—
Bit 5
PE
0
1
0
1
—
—
—
—
—
Bit 3
STOP Mode
Data
Length
0
Asynchronous
8-bit data
1
mode
0
1
0
7-bit data
1
0
1
0
Asynchronous
8-bit data
1
mode (multi-
processor
0
format)
1
7-bit data
—
Synchronous mode 8-bit data
Multi-
processor
Bit
Parity
Bit
No
No
Yes
No
Yes
Yes
No
No
Stop Bit
Length
1 bit
2 bits
1 bit
2 bits
1 bit
2 bits
1 bit
2 bits
1 bit
2 bits
1 bit
2 bits
None
Table 15.9 SMR and SCR Settings and SCI Clock Source Selection
SMR
Bit 7
C/A
0
1
SCR Setting
Bit 1 Bit 0
CKE1 CKE0 Mode
0
0
Asynchronous
1
mode
Clock
Source
Internal
1
0
External
1
0
0
Synchronous Internal
1
mode
1
0
External
1
SCI Transfer Clock
SCK Pin Function
SCI does not use SCK pin
Outputs clock with same frequency as bit
rate
Inputs clock with frequency of 16 times
the bit rate
Outputs serial clock
Inputs serial clock
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