HD64570F16 Renesas Electronics America, HD64570F16 Datasheet - Page 333

• Manufacturer Part Number: HD64570F16
• Description: IC SCA SRL COMM ADAPTER 88QFP
• Manufacturer: Renesas Electronics America

Specifications of HD64570F16

• Applications: ISDN
• Interface: Serial
• Voltage - Supply: 4.75 V ~ 5.25 V
• Package / Case: 88-QFP
• Mounting Type: Surface Mount
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temp Range: -20C to 75C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

PAH: FFFFFFH (upper limit address) to 400000H (lower limit address)
PAM: 3FFFFFH (upper limit address) to 010000H (lower limit address)
PAL: 00FFFFH (upper limit address) to 000000H (lower limit address)
When either PABR0 or PABR1 is set to 00H, the boundary is at the top of the memory space.
Accordingly, when PABR1 is set to 00H and PABR0 is set to 01H, each area is specified as
follows:
PAH:
PAM: FFFFFFH (upper limit address) to 010000H (lower limit address)
PAL: 00FFFFH (upper limit address) to 000000H (lower limit address)
Note that the memory space consists of only PAL and PAM because the PAM upper limit address
is FFFFFFH.
Figures 8.2 (a) to 8.2 (d) show examples of when the physical address space is not partitioned,
when it is partitioned into PAM and PAL, into PAH and PAL, and into three areas (PAH, PAM,
and PAL), respectively.
Physical address boundary
Physical address boundary
PABR1 value: 40 H
PABR0 value: 01 H
register 1 (PABR1)
register 0 (PABR0)
Figure 8.1 Memory Space Partitioned by PABR0 and PABR1
FFFFFFH
400000H
3FFFFFH
010000H
00FFFFH
000000H
Physical address space
Rev. 0, 07/98, page 317 of 453
PAM area
PAH area
PAL area