DF2505BR26DV Renesas Electronics America, DF2505BR26DV Datasheet - Page 173

• Manufacturer Part Number: DF2505BR26DV
• Description: IC H8S/2505 MCU FLASH 176-LFBGA
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2500r

Specifications of DF2505BR26DV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 26MHz
• Connectivity: I²C, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 104
• Program Memory Size: 384KB (384K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 16x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 176-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

7.2
Table 7.1 summarizes the pins of the bus controller.
Table 7.1
Note:
7.3
The bus controller has the following registers.
• Bus width control register (ABWCR)
• Access state control register (ASTCR)
• Wait control register H (WCRH)
• Wait control register L (WCRL)
• Bus control register H (BCRH)
• Bus control register L (BCRL)
• Pin function control register (PFCR)
Name
Address strove
Read
High write
Low write
Chip select 0 to 7 CS0 to CS7*
Wait
Bus mastership
request
Bus mastership
request
acknowledge
*
Input/Output Pins
Register Descriptions
CS1 and CS2 are not provided in the H8S/2556 Group.
Pin Configuration
Symbol
AS
RD
HWR
LWR
WAIT
BREQ
BACK
I/O
Output Strobe signal indicating that address output on
Output Strobe signal indicating that external address space is
Output Strobe signal indicating that external address space is
Output Strobe signal indicating that external address space is
Output Strobe signal indicating that areas 0 to 7 are selected.
Input
Input
Output Acknowledge signal indicating that bus has been
Function
address bus is enabled.
being read.
to be written, and upper half (D15 to D8) of data bus is
enabled.
to be written, and lower half (D7 to D0) of data bus is
enabled.
Wait request signal when accessing external 3-state
access space.
Request signal that releases bus to external device.
released.
Rev. 6.00 Sep. 24, 2009 Page 125 of 928
Section 7 Bus Controller
REJ09B0099-0600