ST92250CV2Q-Auto STMicroelectronics, ST92250CV2Q-Auto Datasheet - Page 146

• Manufacturer Part Number: ST92250CV2Q-Auto
• Description: 8-bit MCU for automotive
• Manufacturer: STMicroelectronics

Specifications of ST92250CV2Q-Auto

• Internal Memory: Single Voltage FLASH up to 256 Kbytes, RAM up to 8Kbytes, 1K byte E3 TM (Emulated EEPROM)
• Minimum Instruction Time: 83 ns (24 MHz int. clock)

ST92124xxx-Auto/150xxxxx-Auto/250xxxx-Auto
EXTERNAL MEMORY SIGNALS (Cont’d)
Figure 77. Effects of DS2EN on the behavior of DS and DS2
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SYSTEM
CLOCK
AS (MC=0)
ALE (MC=1)
DS
(MC=0)
DS2
(MC=0)
OEN
(MC=1, READ)
OEN
(MC=1, WRITE)
OEN2
(MC=1)
DS
(MC=0)
DS2
(MC=0)
OEN
(MC=1)
OEN2
(MC=1, READ)
(MC=1, READ)
OEN2
(MC=1, WRITE)
(MC=1, WRITE)
DS2EN=0 OR (DS2EN=1 AND UPPER MEMORY ADDRESSED):
DS2EN=1 AND LOWER MEMORY ADDRESSED:
T1
NO WAIT CYCLE
T2
T1
1 DS WAIT CYCLE
DS STRETCH
T2