DF3048X16V Renesas Electronics America, DF3048X16V Datasheet - Page 593

• Manufacturer Part Number: DF3048X16V
• Description: MCU 5V 128K,PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3048X16V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

17.2
One function of SYSCR is to enable or disable access to the on-chip RAM. The on-chip RAM is
enabled or disabled by the RAME bit in SYSCR. For details about the other bits, see section 3.3,
System Control Register (SYSCR).
Bit 0—RAM Enable (RAME): Enables or disables the on-chip RAM. The RAME bit is
initialized at the rising edge of the input at the RES pin. It is not initialized in software standby
mode.
Bit 0: RAME
0
1
Bit
Initial value
Read/Write
System Control Register (SYSCR)
Software standby
SSBY
R/W
Description
On-chip RAM is disabled
On-chip RAM is enabled
7
0
STS2
R/W
6
0
Standby timer select 2 to 0
STS1
R/W
5
0
STS0
R/W
4
0
Rev. 7.00 Sep 21, 2005 page 567 of 878
User bit enable
R/W
UE
3
1
NMIEG
R/W
NMI edge select
2
0
Reserved bit
REJ09B0259-0700
—
—
1
1
Section 17 RAM
RAM enable
Enables or
disables
on-chip RAM
(Initial value)
RAME
R/W
0
1