Ram; Overview; Operation; Low Power Consumption Function - Renesas RX100 Series User Manual

RX13T Group
30.

RAM

This MCU has an on-chip high-speed static RAM.
30.1

Overview

Table 30.1 lists the specifications of the RAM.
Table 30.1 Specifications of RAM
Item
RAM capacity
RAM address
Access

Low power consumption function

Note 1. Selectable by the RAME bit in SYSCR1. For details on SYSCR1, see section 3.2.2, System Control Register 1 (SYSCR1).
30.2

Operation

30.2.1 Low Power Consumption Function
Power consumption can be reduced by setting module stop control register C (MSTPCRC) to stop supply of the clock
signal to the RAM.
Setting the MSTPCRC.MSTPC0 bit to 1 stops supply of the clock signal to RAM0.
Stopping supply of the clock signal places the RAM0 in the module stop state. The RAM operates after initialization by
a reset.
The RAM is not accessible in the module stop state. Do not allow transitions to the module stop state while access to
RAM is in progress.
For details on the MSTPCRC register, see section 11, Low Power Consumption .
R01UH0822EJ0100 Rev.1.00
Jul 31, 2019
Description
12 Kbytes
RAM0: 0000 0000h to 0000 2FFFh
 Single-cycle access is possible for both reading and writing.
 On-chip RAM can be enabled or disabled.*
The module stop state is selectable for RAM0.
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30. RAM