PSD834F2-15J STMicroelectronics, PSD834F2-15J Datasheet - Page 25

• Manufacturer Part Number: PSD834F2-15J
• Manufacturer: STMicroelectronics

Specifications of PSD834F2-15J

• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Package Type: PLCC
• Mounting: Surface Mount
• Pin Count: 52
• Lead Free Status / RoHS Status: Compliant

Combined Space Modes. The
Data spaces are combined into one memory
space that allows the primary Flash memory, sec-
ondary Flash memory, and SRAM to be accessed
by either Program Select Enable (PSEN, CNTL2)
Figure 8. 8031 Memory Modules – Combined Space
RD
PSEN
VM REG BIT 3
VM REG BIT 4
VM REG BIT 1
VM REG BIT 2
VM REG BIT 0
DPLD
Program
RS0
CSBOOT0-3
FS0-FS7
and
or Read Strobe (RD, CNTL1). For example, to
configure the primary Flash memory in Combined
space, Bits b2 and b4 of the VM register are set to
1 (see Figure 8).
CS
Primary
Memory
Flash
OE
RD
Secondary
CS
Memory
Flash
OE
CS
PSD834F2V
SRAM
OE
AI02870C
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