R-IN32M3-EC Datasheet, PDF (3/10 Pages) Renesas Technology Corp – System LSI

RENESAS TECHNICAL UPDATE
TN-RIN-A020A/E
Data : Mar. 24, 2017
No.2 3.14.1(1) External MCU Interface
Descriptions for interface system, synchronous relationship, and buffer function modified.
V4.00
Page
Description
Page
58
[3.14.1(1) External MCU Interface]
58 [3.14.1(1) External MCU Interface]
V4.01
Description
- Interface system
 SRAM (Read, Write) with WAIT output
 Page ROM (Read) with WAIT output
- Synchronization-related
 HBUSCLK sync, Async (set by HIFSYNC pin)
Caution. When you use asynchronous mode, please input Low into a HBUSCLK pin.
- Interface system
 Asynchronous SRAM with wait control (for reading and writing)
 Page ROM reading with wait control
- Synchronous relationship (set up with the HIFSYNC pin)
 HBUSCLK synchronous mode (max. 50 MHz), asynchronous mode
Caution: Drive the HBUSCLK pin to low when asynchronous mode is to be used.
- Bus width
 32-bit, 16-bit (set by BUS32EN pin)
- Bus width (set up with the BUS32EN pin)
 32 bits / 16 bits
Remark. 8 bit bus width is not supported.
Remark: The module does not support 8-bit bus width.
- Transfer data size
 32-bit, 16-bit, 8-bit
- Buffer function
 Write buffer: 1 step
 Read buffer: Max. 32-Byte prefetch supported
- Transfer type
 Single transfer
 Page read transfer
- Timing control function
- Transfer data size
 32 bits / 16 bits / 8 bits
- Buffer function
 Write buffer: Two stages (synchronous mode is selected) or one stage (asynchronous mode is
selected)
 Read buffer: Advance reading of up to 32 bytes is possible.
- Transfer type
 Single transfer
 Page read transfer
- Timing control function
(c) 2017. Renesas Electronics Corporation. All rights reserved.
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