Hitachi H8/3048 Hardware Manual page 476

Table 13-8 SMR Settings and Serial Communication Formats
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SMR Settings
Bit 7 Bit 6 Bit 2 Bit 5 Bit 3
C/A CHR MP
0 0 0
0 0 0
0 0 0
0 0 0
0 1 0
0 1 0
0 1 0
0 1 0
0 0 1
0 0 1
0 1 1
0 1 1
1 — —
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
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
PE STOP Mode
0 0 Asynchronous
mode
0 1
1 0
1 1
0 0
0 1
1 0
1 1
Asynchronous
— 0
mode (multi-
— 1
processor
— 0
format)
— 1
— — Synchronous
mode
Mode
Asynchronous mode
Synchronous mode
SCI Communication Format
Multi-
Data processor
Length Bit
8-bit data Absent
7-bit data
8-bit data Present
7-bit data
8-bit data Absent
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
465
Stop
Parity Bit
Bit Length
Absent 1 bit
2 bits
Present 1 bit
2 bits
Absent 1 bit
2 bits
Present 1 bit
2 bits
Absent 1 bit
2 bits
1 bit
2 bits
None