DF2378RVFQ34V Renesas Electronics America, DF2378RVFQ34V Datasheet - Page 218

• Manufacturer Part Number: DF2378RVFQ34V
• Description: IC H8S MCU FLASH 512K 144LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2378RVFQ34V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 34MHz
• Connectivity: I²C, IrDA, SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 97
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b; D/A 6x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-LQFP
• For Use With: YLCDRSK2378 - KIT DEV EVAL H8S/2378 LCDYR0K42378FC000BA - KIT EVAL FOR H8S/2378HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)EDK2378 - DEV EVAL KIT FOR H8S/2378
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 6 Bus Controller (BSC)
6.3.4
RDNCR selects the read strobe signal (RD) negation timing in a basic bus interface read access.
Bit
7
6
5
4
3
2
1
0
Rev.7.00 Mar. 18, 2009 page 150 of 1136
REJ09B0109-0700
RDNn = 0
RDNn = 1
Bit Name
RDN7
RDN6
RDN5
RDN4
RDN3
RDN2
RDN1
RDN0
Figure 6.2 Read Strobe Negation Timing (Example of 3-State Access Space)
Read Strobe Timing Control Register (RDNCR)
φ
RD
Data
RD
Data
Initial Value
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
T
1
Description
Read Strobe Timing Control 7 to 0
These bits set the negation timing of the read
strobe in a corresponding area read access.
As shown in figure 6.2, the read strobe for an area
for which the RDNn bit is set to 1 is negated one
half-state earlier than that for an area for which the
RDNn bit is cleared to 0. The read data setup and
hold time specifications are also one half-state
earlier.
0: In an area n read access, the RD is negated at
1: In an area n read access, the RD is negated one
the end of the read cycle
half-state before the end of the read cycle
Bus cycle
T
2
T
3
(n = 7 to 0)