upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 78

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

(2) Memory address output mode register (MAM)
After reset: 00H
78
Symbol
MAM
Caution An in-circuit emulator cannot be used to debug the memory address output mode register
Remark
This register sets the mode of each pin of ports 3, 10, and 11. Separate output can be set for the address bus
(A1 to A15) in the external expansion mode. Separate bus output is output to P34 to P36, P100 to P107, and
P110 to P113.
Set the separate bus output according to the following procedure.
(i)
(ii) Turn this function off if the ports to be used as the separate bus are being used as alternate-function pins
(iii) Set the memory address output register (MAM).
(iv) Set the memory expansion mode register (MM) (refer to 3.4.6 (1) Memory expansion mode register (MM)).
The MAM register can be written in 8-bit units. If read, undefined values will be read. However, bits 3 to 7 are
fixed to 0.
Remark
Set to output mode (PMn bit = 0) after setting port m, which will be used for separate output, to 0 output (Pn
bit = 0).
other than those of the separate bus.
MAM2
0
0
0
1
1
1
1
(MAM). Also, the separate bus cannot be switched to by setting the MAM register by software.
For details, refer to IE-703017-MC-EMI User’s Manual.
For details of the operation of each port pin, refer to 2.3 Description of Pin Functions.
7
0
When m = 3: n = 34 to 36
When m = 10: n = 100 to 107
When m = 11: n = 110 to 113
MAM1
W
0
1
1
0
0
1
1
6
0
MAM0
0
0
1
0
1
0
1
5
0
Address Space
512 bytes
32 bytes
16 KB
32 KB
64 KB
8 KB
CHAPTER 3 CPU FUNCTIONS
−
User’s Manual U12768EJ4V1UD
Address: FFFFF068H
4
0
A1 to A4
Port 11
3
0
MAM2
2
A5 to
A8
Port mode
Port 10
MAM1
A9 to
A12
1
A13
MAM0
Port 3
A14
0
A15