D12350F20IV Renesas Electronics America, D12350F20IV Datasheet - Page 171

• Manufacturer Part Number: D12350F20IV
• Description: IC H8S/2350 MCU 4.5/5.5V 0+K I-T
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12350F20IV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 87
• Program Memory Type: ROMless
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Bit 3—DACK Timing Select (DDS): Selects the DMAC single address transfer bus timing for
the DRAM interface.
Bit 2—Reserved: Only 1 should be written to this bit.
Bit 1—Write Data Buffer Enable (WDBE): Selects whether or not the write buffer function is
used for an external write cycle or DMAC single address cycle.
Bit 0—WAIT Pin Enable (WAITE): Selects enabling or disabling of wait input by the WAIT
pin.
Bit 3
DDS
0
1
Bit 1
WDBE
0
1
Bit 0
WAITE
0
1
Description
When DMAC single address transfer is performed in DRAM space, full access is
always executed
DACK signal goes low from T
Burst access is possible when DMAC single address transfer is performed in DRAM
space
DACK signal goes low from T
Description
Write data buffer function not used
Write data buffer function used
Description
Wait input by WAIT pin disabled. WAIT pin can be used as I/O port.
Wait input by WAIT pin enabled
r
c1
or T
or T
1
2
cycle
cycle
Rev. 3.00 Sep 15, 2006 page 135 of 988
Section 6 Bus Controller
REJ09B0330-0300
(Initial value)
(Initial value)
(Initial value)