DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 682

• Manufacturer Part Number: DF2148ATE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148ATE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: Host Interface, I²C, IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 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: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F2148ATE20; HD64F2148ATE20

Section 21 RAM
21.1.2
The on-chip RAM is controlled by SYSCR. Table 21.1 shows the register configuration.
Table 21.1 Register Configuration
Name
System control register
Note:
21.2
The on-chip RAM is enabled or disabled by the RAME bit in SYSCR. For details of other bits in
SYSCR, see section 3.2.2, System Control Register (SYSCR).
Bit 0—RAM Enable (RAME): Enables or disables the on-chip RAM. The RAME bit is
initialized when the reset state is released. It is not initialized in software standby mode.
Bit 0
RAME
0
1
Rev. 4.00 Sep 27, 2006 page 636 of 1130
REJ09B0327-0400
Bit
Initial value
Read/Write
* Lower 16 bits of the address.
Register Configuration
System Control Register (SYSCR)
Description
On-chip RAM is disabled
On-chip RAM is enabled
CS2E
R/W
7
0
IOSE
R/W
6
0
Abbreviation
SYSCR
INTM1
R
5
0
INTM0
R/W
4
0
R/W
R/W
XRST
R
3
1
H'09
Initial Value
NMIEG
R/W
2
0
R/W
HIE
1
0
Address *
H'FFC4
(Initial value)
RAME
R/W
0
1