Renesas Hitachi H8S/2194 Series Hardware Manual page 100

Bit 6 Bit 5
STS2 STS1
0 0
0 0
0 1
0 1
1 0
1 0
1 1
Notes: * Don't care
1. With FLASH ROM version, do not set the standby time to 16 states.
The standby time is 32 states when transited to medium-speed mode φ/32 (SCK1=1,
SCK0=0).
Bit 3, 2: Reserved.
These bits cannot be modified and are always read as 0.
Bits 1, 0: System Clock Select 1, 0 (SCK1, SCK0)
These bits select the CPU clock for the bus master in high-speed mode and medium-speed mode.
Bit 1 Bit 0
SCK1 SCK0
0 0
0 1
1 0
1 1
Bit 4
STS0 Description
0 Standby time = 8192 states
1 Standby time = 16384 states
0 Standby time = 32768 states
1 Standby time = 65536 states
0 Standby time = 131072 states
1 Standby time = 262144 states
* Standby time = 16 states
Description
Bus master is in high-speed mode (Initial value)
Medium-speed clock is φ/16
Medium-speed clock is φ/32
Medium-speed clock is φ/64
*1
Rev. 2.0, 11/00, page 73 of 1037