HD6433044 Datasheet, PDF (476/867 Pages) Hitachi Semiconductor – Hitachi Single-Chip Microcomputer

Table 13-8 SMR Settings and Serial Communication Formats
SMR Settings
Bit 7 Bit 6 Bit 2 Bit 5 Bit 3
C/A CHR MP PE STOP Mode
00000
00001
Asynchronous
mode
00010
00011
01000
01001
01010
01011
0 0 1 —0
0 0 1 —1
0 1 1 —0
Asynchronous
mode (multi-
processor
format)
0 1 1 —1
1
————
Synchronous
mode
SCI Communication Format
Data
Length
Multi-
processor Parity
Bit
Bit
Stop
Bit
Length
8-bit data Absent
Absent 1 bit
2 bits
Present 1 bit
2 bits
7-bit data
Absent 1 bit
2 bits
Present 1 bit
2 bits
8-bit data Present
Absent 1 bit
2 bits
7-bit data
1 bit
2 bits
8-bit data Absent
None
Table 13-9 SMR and SCR Settings and SCI Clock Source Selection
SMR SCR Settings
Bit 7 Bit 1 Bit 0
C/A CKE1 CKE0
00
0
00
1
01
0
01
1
10
0
10
1
11
0
11
1
Mode
Asynchronous mode
Synchronous mode
SCI Transmit/Receive Clock
Clock Source SCK Pin Function
Internal
SCI does not use the SCK pin
Outputs a clock with frequency
matching the bit rate
External
Inputs a clock with frequency
16 times the bit rate
Internal
Outputs the serial clock
External
Inputs the serial clock
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