ST92T163 ST Microelectronics, ST92T163 Datasheet - Page 91

• Manufacturer Part Number: ST92T163
• Description: 8/16-BIT FULL SPEED USB MCU FOR COMPOSITE DEVICES WITH 16 ENDPOINTS
• Manufacturer: ST Microelectronics

EXTERNAL MEMORY SIGNALS (Cont’d)
Figure 50. Effects of DS2EN on the behavior of DS and DS2
n
(MC=1, READ)
(MC=1, WRITE)
(MC=1, WRITE)
(MC=1, READ)
AS (MC=0)
(MC=0)
SYSTEM
CLOCK
DS2
DS2
DS2
(MC=0)
DS
DS
DS2
DS2EN=0 OR (DS2EN=1 AND UPPER MEMORY ADDRESSED):
DS
DS
DS2EN=1 AND LOWER MEMORY ADDRESSED:
T1
NO WAIT CYCLE
ST92163 - EXTERNAL MEMORY INTERFACE (EXTMI)
T2
T1
1 DS WAIT CYCLE
DS STRETCH
T2
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