ST92185B STMicroelectronics, ST92185B Datasheet - Page 87

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

TDSRAM (Cont’d)
7.3.4 Register Description
RAM INTERFACE CONFIGURATION REGIS-
TER (CONFIG )
R252 - Read/Write
Register Page: 38
Reset Value: 0000 0010 (02h)
Bit 7:2 = Reserved, keep in reset state.
7
0
0
0
0
0
0
DON GEN
ST92185B - DISPLAY STORAGE RAM INTERFACE
0
Bit 1 = DON: Display ON/OFF .
0: No display reading allowed (display slot com-
1: Display reading enabled during the respective
Note: DON can be changed only when the TRI is
off (GEN = 0).
<
Bit 0 = GEN: RAM Interface General Enable .
0: TRI off. Display reading and CPU accesses are
1: TRI on.
pletely used for CPU access).
access slot.
not allowed. When GEN=0, the Automatic Wait
Cycle insertion, while trying to access the
TDSRAM, is disabled.
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