DF2437FV Renesas Electronics America, DF2437FV Datasheet - Page 133

• 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: -

This LSI has an on-chip bus controller (BSC) that manages the bus width and the number of
access states of the external address space.
6.1
• Extended modes
• Extended area division
• Area select signal, address strobe/hold signal polarity control
• It is possible to reverse the output polarity of CS1 to CS3 and AS/AH by the PNCCS bit in
Normal Extension:
Address output pins (A15 to A0) and data input/output pins (D15 to D0) are separate
• Usable areas
• Normal extended bus interface
• Idle cycle insertion
BSCS200A_000020020300
Two modes for external extension
Normal extended mode: Normal extension (when the ADMXE bit in BCR is 0)
Address-data multiplex extended mode: Multiplex extension (when the ADMXE bit in BCR is
1)
The external address space is divided into a basic area, and three 64-kbyte areas
The basic area and area 1 are for common settings. Area 2 and 3 bus specifications can be set
independently
Areas 1, 2, and 3 enable chip-select (CS1 to CS3) output
A maximum of 16 addresses can be output
BCRAn or the PNCASH bit in BCR
Basic area and areas 1, 2, and 3 are all usable
Selection between 2-state access area and 3-state access area is possible
Program wait state insert is possible
Idle cycle insert is possible during the external write cycle, directly after external read cycle.
Features
Section 6 Bus Controller (BSC)
Rev.2.00 May. 28, 2009 Page 93 of 732
REJ09B0059-0200