Renesas H8S/2318 series, Hardware Manual

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Rev. 5.00, 12/03, page 446 of 1088
Table 12-7 Maximum Bit Rate with External Clock Input (Synchronous Mode)
φφφφ
(MHz) External Input Clock (MHz) Maximum Bit Rate (bits/s)
2 0.3333 333333.3
4 0.6667 666666.7
6 1.0000 1000000.0
8 1.3333 1333333.3
10 1.6667 1666666.7
12 2.0000 2000000.0
14 2.3333 2333333.3
16 2.6667 2666666.7
18 3.0000 3000000.0
20 3.3333 3333333.3
25 4.1667 4166666.7
12.2.9 Smart Card Mode Register (SCMR)
Bit : 7 6 5 4 3 2 1 0
— — — — SDIR SINV — SMIF
Initial value : 1 1 1 1 0 0 1 0
R/W : — — — — R/W R/W — R/W
SCMR selects LSB-first or MSB-first transfer by means of bit SDIR. Except in the case of
asynchronous mode 7-bit data, LSB-first or MSB-first transfer can be selected regardless of the
serial communication mode. The descriptions in this chapter refer to LSB-first transfer.
For details of the other bits in SCMR, see section 13.2.1, Smart Card Mode Register (SCMR).
SCMR is initialized to H'F2 by a reset and in hardware standby mode. In software standby mode
and module stop mode it retains its previous state.
Bits 7 to 4—Reserved: These bits cannot be modified and are always read as 1.