DF2398F20V Renesas Electronics America, DF2398F20V Datasheet - Page 905

• Manufacturer Part Number: DF2398F20V
• Description: IC H8S/2300 MCU FLASH 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of DF2398F20V

• 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 Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• For Use With: YR0K42378FC000BA - KIT EVAL FOR H8S/2378
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

DRAMCR—DRAM Control Register
RTCNT—Refresh Timer Counter
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
:
:
:
:
:
:
Refresh Control
RFSHE
0
1
R/W
7
0
Refresh control is not performed
Refresh control is performed
R/W
RAS-CAS Wait
7
0
0
1
RCW
R/W
Wait state insertion in CAS-before-RAS refreshing disabled
RAS falls in T
One wait state inserted in CAS-before-RAS refreshing
RAS falls in T
6
0
R/W
Refresh Mode
6
0
0
1
RMODE
R/W
DRAM interface: CAS-before-RAS refreshing used
Self-refreshing used
5
0
Rr
Rc1
Compare Match Flag
R/W
cycle
0
1
cycle
5
0
H'FED7
H'FED8
Internal clock count value
[Clearing condition]
[Setting condition]
CMF
R/W
Set when RTCNT = RTCOR
Cleared by reading the CMF flag when CMF = 1, then
writing 0 to the CMF flag
4
0
Compare Match Interrupt Enable
R/W
0
1
4
0
CMIE
Interrupt request (CMI) by CMF flag disabled
Interrupt request (CMI) by CMF flag enabled
R/W
3
0
Refresh Counter Clock Select
0
1
R/W
3
0
CKS2
R/W
0
1
0
1
2
0
0
1
0
1
0
1
0
1
R/W
Bus Controller
Bus Controller
Rev.6.00 Oct.28.2004 page 875 of 1016
Count operation disabled
Count uses ø/2
Count uses ø/8
Count uses ø/32
Count uses ø/128
Count uses ø/512
Count uses ø/2048
Count uses ø/4096
2
0
CKS1
R/W
1
0
R/W
CKS0
R/W
1
0
0
0
R/W
REJ09B0138-0600H
0
0