ST92185B STMicroelectronics, ST92185B Datasheet - Page 31

• Manufacturer Part Number: ST92185B
• Description: 16k/24k/32k Rom Hcmos Mcu With On-screen-display
• Manufacturer: STMicroelectronics

Bits 4:2 = PRS[2:0]: CPUCLK Prescaler .
These bits load the prescaler division factor for the
internal clock (INTCLK). The prescaler factor se-
lects the internal clock frequency, which can be di-
vided by a factor from 1 to 8. Refer to the Reset
and Clock Control chapter for further information.
Bit 1 = BRQEN: Bus Request Enable .
0: External Memory Bus Request disabled
1: External Memory Bus Request enabled on
BREQ pin (where available).
Note: Disregard this bit if BREQ pin is not availa-
ble.
Bit 0 = HIMP: High Impedance Enable .
When any of Ports 0, 1, 2 or 6 depending on de-
vice configuration, are programmed as Address
and Data lines to interface external Memory, these
lines and the Memory interface control lines (AS,
DS, R/W) can be forced into the High Impedance
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