r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 37

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

Classification
Operating mode
control
System control
MD1, MD0
FWE
RES
MRES
WDTOVF
BREQ
BACK
Symbol
I/O
I
I
I
I
O
I
O
Name
Mode set
Flash memory
Power-on reset
Manual reset
Watchdog timer
Bus-mastership
Bus-mastership
write enable
overflow
request
request
acknowledge
Rev. 1.00 Sep. 21, 2007 Page 11 of 1124
Function
Sets the operating mode. Do not
change values on these pins during
operation. Only MD1 is available in
the SH7136.
Pin for flash memory
Flash memory can be protected
against programming or erasure
through this pin.
When low, this LSI enters the power-
on reset state.
When low, this LSI enters the
manual reset state.
Output signal for the watchdog timer
overflow
Use a resistor of 1 MΩ or more when
this pin needs to be pulled down.
Low when an external device
requests the release of the bus
mastership. This pin is available only
on the SH7137.
Indicates that the bus mastership
has been released to an external
device. Reception of the BACK
signal informs the device which has
output the BREQ signal that it has
acquired the bus. This pin is
available only on the SH7137.
Section 1 Overview
REJ09B0402-0100