psd813f1a-90ut STMicroelectronics, psd813f1a-90ut Datasheet - Page 39

• Manufacturer Part Number: psd813f1a-90ut
• Description: Flash In-system Programmable Isp Peripherals For 8-bit Mcus
• Manufacturer: STMicroelectronics

The
PSD913F1
Functional
Blocks
(cont.)
38
PSD913F1
Figure 15. An Example of a Typical 8-Bit Non-Multiplexed Bus Interface
Figure 14. An Example of a Typical 8-Bit Multiplexed Bus Interface
RESET
CONTROLLER
RESET
CONTROLLER
MICRO-
MICRO-
BHE
ALE
WR
RD
BHE
ALE
WR
RD
A [ 15:0 ]
D [ 7:0 ]
AD [ 7:0 ]
A [ 15:8 ]
PSD913F1
WR ( CNTRL0 )
RD ( CNTRL1 )
BHE ( CNTRL2 )
RST
ALE ( PD0 )
PORT D
PORT
ADIO
PSD913F1
WR ( CNTRL0 )
RD ( CNTRL1 )
BHE ( CNTRL2 )
RST
ALE ( PD0 )
PORT D
PORT
ADIO
PORT
PORT
PORT
A
B
C
PORT
PORT
PORT
A
B
C
D [ 7:0 ]
(OPTIONAL)
A [ 23:16 ]
( OPTIONAL )
( OPTIONAL )
A [ 7: 0 ]
A [ 15: 8 ]
Preliminary