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7721 Datasheet(PDF) 50 Page - Renesas Technology Corp

Part # 7721
Description  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  577 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

7721 Datasheet(HTML) 50 Page - Renesas Technology Corp

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CONNECTION WITH EXTERNAL DEVICES
7721 Group User’s Manual
3–3
3.1 Signals required for accessing external devices
Fig. 3.1.1 Pin configurations when external data bus width is 16 bits and 8 bits (top view)
P86/RXD1
P85/CLK1
P84/CTS1/RTS1
P83/TXD0
P82/RXD0
P81/CLK0
P80/CTS0/RTS0
VCC
AVCC
VREF
AVSS
VSS
P77/AN7/ADTRG
P76/AN6
P75/AN5
P74/AN4
P73/AN3
P72/AN2
P71/AN1
P70/AN0
A21/D5
A22/D6
A23/D7
R/W
BHE
BLE
ALE
ST0
ST1
VCC
VSS
E
XOUT
XIN
RESET
RESETOUT
CNVSS
BYTE
HOLD
RDY
M37721S2BFP
P86/RXD1
P85/CLK1
P84/CTS1/RTS1
P83/TXD0
P82/RXD0
P81/CLK0
P80/CTS0/RTS0
VCC
AVCC
VREF
AVSS
VSS
P77/AN7/ADTRG
P76/AN6
P75/AN5
P74/AN4
P73/AN3
P72/AN2
P71/AN1
P70/AN0
A21/D5
A22/D6
A23/D7
R/W
BHE
BLE
ALE
ST0
ST1
VCC
VSS
E
XOUT
XIN
RESET
RESETOUT
CNVSS
BYTE
HOLD
RDY
M37721S2BFP
qExternal data bus width = 16 bits (BYTE = “L”)
: External address bus, external data bus,
bus control signal
qExternal data bus width = 8 bits (BYTE = “H”)
Note: For the DRAM control signals, refer to “CHAPTER 14. DRAM CONTROLLER.”
: External address bus, external data bus,
bus control signal



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