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32186 Datasheet(PDF) 849 Page - Renesas Technology Corp

Part # 32186
Description  MCU
PDF  1032 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

32186 Datasheet(HTML) 849 Page - Renesas Technology Corp

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18
WAIT CONTROLLER
18-7
32185/32186 Group Hardware Manual
Rev.1.10 REJ09B0235-0110 May 15, 07
Figure 18.3.1 Internal Bus Access during Bus Free State
18.3 Typical Operation of Wait Controller
The following shows a typical operation of the Wait Controller. The Wait Controller can control bus access in
zero to 15 cycles. If more access cycles than that are needed, use the WAIT function in combination with the
Wait Controller.
(1) When the Bus Mode Control Register = 0
External read/write operations are performed using the address bus, data bus and the signals CS0#–
CS3#, RD#, BHW#, BLW#, WAIT#, CLKOUT and BCLK.
18.3 Typical Operation of Wait Controller
Bus free state
Internal bus access
"H"
CLKOUT
A9–A30
CS0#–CS3#
BHW#, BLW#
DB0–DB15
WAIT#
RD#
"H"
Hi-Z
Note 1: For details about the Bus Mode Control Register, see Section 17.2.2, "Bus Mode Control Register."
Note: • Hi-Z denotes a high-impedance state.
(Don't Care)
Bus Mode Control Register (Note 1)
BUSMOD bit = 0 (WR signal separated)



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