upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 89
upd70f3017ay
Manufacturer Part Number
upd70f3017ay
Description
V850/sa1tm 32-/16-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD70F3017AY.pdf
(492 pages)
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RAM, and I/O can be connected.
4.1 Features
4.2 Bus Control Pins and Control Register
4.2.1 Bus control pins
memory address output mode register (MAM). For the details of specifying an operation mode of the external bus
interface, refer to 3.4.6 (1) Memory expansion mode register (MM) and for (2) Memory address output mode
register (MAM).
The V850/SA1 is provided with an external bus interface function by which external memories such as ROM and
• Address bus (capable of separate output)
The following pins are used for interfacing with external devices.
The bus interface function of each pin is enabled by specifying the memory expansion mode register (MM) or the
Caution For debugging using the separate bus, refer to IE-703017-MC-EM1 User’s Manual.
•
•
•
•
•
16-bit data bus
Able to be connected to external devices via the pins that have alternate functions as ports
Wait function
• Programmable wait function, capable of inserting up to 3 wait states per 2 blocks
• External wait control through WAIT input pin
Idle state insertion function
Bus hold function
Address/data bus (AD0 to AD7)
Address/data bus (AD8 to AD15)
Address bus (A1 to A4)
Address bus (A5 to A12)
Address bus (A13 to A15)
Address bus (A16 to A21)
Read/write control (LBEN, UBEN, R/W, DSTB, WRL, WRH, RD)
Address strobe (ASTB)
Bus hold control (HLDRQ, HLDAK)
External wait control (WAIT)
External Bus Interface Function
CHAPTER 4 BUS CONTROL FUNCTION
Table 4-1. Bus Control Pins
User’s Manual U12768EJ4V1UD
Port 4 (P40 to P47)
Port 5 (P50 to P57)
Port 11 (P110 to P113)
Port 10 (P100 to P107)
Port 3 (P34 to P36)
Port 6 (P60 to P65)
Port 9 (P90 to P93)
Port 9 (P94)
Port 9 (P95, P96)
Port 12 (P120)
Corresponding Port (Pins)
89
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