D12332VFC25 Renesas Electronics America, D12332VFC25 Datasheet - Page 204

• Manufacturer Part Number: D12332VFC25
• Description: MCU 3V 0K 144-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12332VFC25

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 106
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 4x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: HD6412332VFC25; HD6412332VFC25

Section 6 Bus Controller
6.5.8
Wait Control
There are two ways of inserting wait states in a DRAM access cycle: program wait insertion and
pin wait insertion using the WAIT pin.
Program Wait Insertion: When the bit in ASTCR corresponding to an area designated as DRAM
space is set to 1, from 0 to 3 wait states can be inserted automatically between the T
state and T
c1
c2
state, according to the settings of WCRH and WCRL.
Pin Wait Insertion: When the WAITE bit in BCRH is set to 1, wait input by means of the WAIT
pin is enabled. When DRAM space is accessed in this state, a program wait is first inserted. If the
WAIT pin is low at the falling edge of φ in the last T
or T
state, another T
state is inserted. If
c1
w
w
the WAIT pin is held low, T
states are inserted until it goes high.
w
Figure 6.17 shows an example of wait state insertion timing.
Rev.4.00 Sep. 07, 2007 Page 172 of 1210
REJ09B0245-0400