upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 333

• Manufacturer Part Number: upd70f3017ay
• Description: V850/sa1tm 32-/16-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

The correspondence between DRAn setting value and internal RAM area is shown below.
(a)
µ
70F3015BY
Set the DRAn register to a value in the range of 0000H to 0FFFH (n = 0 to 2).
Setting is prohibited for values between 1000H and 1FFFH.
Cautions 1. Do not set odd addresses for 16-bit transfer (DCHCn register DSn = 1).
Remark
PD703014A, 703014AY, 703014B, 703014BY, 703015A, 703015AY, 703015B, 703015BY, 70F3015B,
Figure 12-2. Correspondence Between DRAn Setting Value and Internal RAM (4 KB)
The DRAn register setting values are in the parentheses.
2. While the increment function is being used (DCHCn register DDADn = 0), if the DRAn
register value is set to 0FFFH, it will be incremented to 1000H, and will thus become a
setting-prohibited value.
xxFFDFFFH
xxFFFFFFH
xxFFEFFFH
xxFFBFFFH
xxFFC000H
xxFFE000H
xxFFF000H
CHAPTER 12 DMA FUNCTIONS
Internal RAM area
On-chip peripheral
Access-prohibited
External memory
User’s Manual U12768EJ4V1UD
I/O area
area
area
(DRAn setting value)
4 KB (usable for DMA)
(0FFFH)
(0000H)
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