ST92F150CV1 STMicroelectronics, ST92F150CV1 Datasheet - Page 144
ST92F150CV1
Manufacturer Part Number
ST92F150CV1
Description
8-bit MCU
Manufacturer
STMicroelectronics
Datasheet
1.ST92F150CR1.pdf
(429 pages)
Specifications of ST92F150CV1
Internal Memory
Single Voltage FLASH up to 256 Kbytes, RAM up to 8Kbytes, 1K byte E3 (Emulated EEPROM)
Minimum Instruction Time
83 ns (24 MHz int. clock)
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ST92F124/F150/F250 - EXTERNAL MEMORY INTERFACE (EXTMI)
EXTERNAL MEMORY SIGNALS (Cont’d)
8.2.5 PORT 0
If Port 0 is used as a bit programmable parallel I/O
port, it has the same features as a regular port.
When set as an Alternate Function, it is used as
the External Memory interface: it outputs the mul-
tiplexed Address (8 LSB: A[7:0]) / Data bus D[7:0].
8.2.6 PORT 1
If Port 1 is used as a bit programmable parallel I/O
port, it has the same features as a regular port.
When set as an Alternate Function, it is used as
the external memory interface to provide the ad-
dress bits A[15:8].
Figure 74. Application Example (MC=0)
Figure 75. Application Example (MC=1)
144/429
9
ST9
ST9
P9[6:2], P1
P9[6:2], P1
WEN
P9.7
OEN
P9.7
ALE
RW
P0
AS
P0
DS
A[20:8]
A[20:8]
A21
A21
A[7:0]
A[7:0]
D[7:0]
D[7:0]
D[7:0]
D[7:0]
OE
OE
LE
LE
LATCH
LATCH
Q[7:0]
Q[7:0]
8.2.7 PORT 9 [7:2]
If Port 9 is available and used as a bit programma-
ble I/O port, it has the same features as a regular
port. If the MMU is available on the device and
Port 9 is set as an Alternate Function, Port 9[7:2] is
used as the external memory interface to provide
the 6 MSB of the address (A[21:16]).
Note: For the ST92F250 device, since A[18:17]
share the same pins as SDA1 and SCL1 of I²C_1,
these address bits are not available when the
I²C_1 is in use (when I2CCR.PE bit is set).
A[20:0]
A[20:0]
Q[7:0]
Q[7:0]
E
E
W
G
Q[7:0]
A[20:0]
E
DS
W
G
Q[7:0]
A[20:0]
E
DS
2 Mbytes
2 Mbytes
2 Mbytes
2 Mbytes
RAM
ROM
RAM
ROM
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