DF2238RTF6 Renesas Electronics America, DF2238RTF6 Datasheet - Page 253

• Manufacturer Part Number: DF2238RTF6
• Description: MCU 2.2/3V 256K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2200r

Specifications of DF2238RTF6

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 6MHz
• Connectivity: I²C, SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 72
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 3.6 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: HD64F2238RTF6; HD64F2238RTF6

(2) Pin Wait Insertion
Figure 7.18 shows an example of wait state insertion timing.
Setting the WAITE bit in BCRL to 1 enables wait insertion by means of the WAIT pin. When
external space is accessed in this state, program wait insertion is first carried out according to
the settings in WCRH and WCRL. Then, if the WAIT pin is low at the falling edge of φ in the
last T
until it goes high.
2
or T
Read
Write
Note: ↓ indicates the timing of WAIT pin sampling.
W
state, a T
Address bus
HWR, LWR
Figure 7.18 Example of Wait State Insertion Timing
Data bus
Data bus
WAIT
φ
W
RD
AS
state is inserted. If the WAIT pin is held low, T
T
1
By program
wait
T
2
T
w
Write data
Rev. 6.00 Mar. 18, 2010 Page 191 of 982
By WAIT pin
T
w
T
w
Section 7 Bus Controller
Read data
W
states are inserted
T
REJ09B0054-0600
3