PSD813F1A-90MI STMicroelectronics, PSD813F1A-90MI Datasheet - Page 46

• Manufacturer Part Number: PSD813F1A-90MI
• Description: IC FLASH 1MBIT 90NS 52QFP
• Manufacturer: STMicroelectronics

Specifications of PSD813F1A-90MI

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 1M (128K x 8)
• Speed: 90ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 52-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-1978

PSD813F1A
PSD Interface to a Non-Multiplexed 8-Bit Bus
Figure
microcontroller with an 8-bit non-multiplexed bus
and a PSD. The address bus is connected to the
ADIO Port, and the data bus is connected to Port
Figure 22. An Example of a Typical 8-bit Non-Multiplexed Bus Interface
46/111
22
RESET
MCU
shows an example of a system using a
BHE
ALE
WR
RD
A [ 15:0 ]
D [ 7:0 ]
PSD
WR ( CNTRL0 )
RD ( CNTRL1 )
BHE ( CNTRL2 )
RST
ALE ( PD0 )
PORT D
PORT
ADIO
A. Port A is in tri-state mode when the PSD is not
accessed by the microcontroller. Should the sys-
tem address bus exceed sixteen bits, Ports B, C,
or D may be used for additional address inputs.
PORT
PORT
PORT
A
B
C
D [ 7:0 ]
(OPTIONAL)
A [ 23:16 ]
AI02879C