SH7262 Datasheet, PDF (4/45 Pages) Renesas Technology Corp – High-speed Read/Write Serial Flash Memory

SH7262/SH7264 Group
High-speed Read/Write Serial Flash Memory
Using the Renesas Serial Peripheral Interface
SH7264
RSPCK0
SSL00
Serial flash memory
3.3 V
AT26DF161A
2 MB
3.3 V ^{SCK (Serial Clock)}
CS# (Chip Select)
3.3 V
MOSI0
3.3 V
MISO0
SI (Serial Data Input)
3.3 V
3.3 V
SO (Serial Data Output)
HOLD#
DIP
switches
WP# (Write Protect)
Figure 1 Serial Flash Memory Circuit
Note:
Pull-up or pull-down the control signal pins by the external resistor
To pull up or pull down the control signal pins, determine the signal line level not to cause the external device
malfunction when the MCU pin status is in high-impedance. SSL00 pin is pulled up by the external resistor to High-
level. Pull up or down the RSPCK0 and MOSI0 pins. As the MISO0 pin is an input pin, pull up or down it to avoid
floating to the midpoint voltage.
Table 2 Multiplexed Pins
Peripheral
Functions
RSPI
Pin
Name
MISO0
MOSI0
SSL00
RSPCK0
SH7264 Port Control Register
Register
Name
MD bit Setting
PFCR3
PF12MD[2:0] = B'011
PFCR2
PF11MD[2:0] = B'011
PFCR2
PF10MD[2:0] = B'011
PFCR2
PF9MD[2:0] = B'011
SH7264
Multiplexed Pin Name
PF12/BS#/MISO0/TIOC3D/SPDIF_OUT
PF11/A25/SSIDATA3/MOSI0/TIOC3C/SPDIF_IN
PF10/A24/SSIWS3/SSL00/TIOC3B/FCE#
PF9/A23/SSISCK3/RSPCK0/TIOC3A/FRB
Note: SH7264 Multiplexed Pins
MISO0, MOSI0, SSL00, and RSPCK0 pins are multiplexed, and set to general-purpose I/O ports as
default. Before accessing serial flash memory, use the general-purpose I/O port control register to set the
multiplexed pins to RSPI pins.
REJ06B0889-0100/Rev.1.00
June 2009
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