DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 137

• Manufacturer Part Number: DF2437FV
• Description: IC H8S/2437 MCU FLASH 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2400r

Specifications of DF2437FV

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 85
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

6.3.2
BCRA designates the access mode in area 1 to area 3. The basic area indicates the setting of area 1.
Bit
0
Bit
7
6
5
Bit Name
ADMXE
Bit Name
ABWn
ASTn
PNCCSn
Area Control Register (BCRA)
Initial
Value
0
Initial
Value
1
1
0
R/W
R/W
R/W
R/W
R/W
R/W
Description
Address and Data Multiplex Bus Interface Enable
Selects the type of external extended bus interface.
0: Normal extended bus interface
1: Address and data multiplex extended bus interface
Description
Area Bus Width Control
Selects the bus width for area n.
0: 16-bit
1: 8-bit
Area Access State Control
Designates the number of access states in area n.
Simultaneously permits or prohibits wait state insertion.
Normal extension (ADMXE = 0):
0: 2-state access area, wait state insertion prohibited
1: 3-state access area, wait state insertion permitted
Multiplex extension (ADMXE = 1):
0: Data 2-state access area, wait state insertion
prohibited
1: Data 3-state access area, wait state insertion
permitted
Chip Select Polarity Control
Controls the output polarity of the chip select signal
(CSn) for area n.
0: CSn output
1: CSn output
Rev.2.00 May. 28, 2009 Page 97 of 732
REJ09B0059-0200