DF2398F20V Renesas Electronics America, DF2398F20V Datasheet - Page 149

• 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: -

Bit 3—Compare Match Interrupt Enable (CMIE): Enables or disables interrupt requests (CMI) by the CMF flag when
the CMF flag in DRAMCR is set to 1.
When refresh control is performed (RFSHE = 1), the CMIE bit is always cleared to 0.
Bits 2 to 0—Refresh Counter Clock Select (CKS2 to CKS0): These bits select the clock to be input to RTCNT from
among 7 internal clocks obtained by dividing the system clock (ø). When the input clock is selected with bits CKS2 to
CKS0, RTCNT begins counting up.
6.2.8
RTCNT is an 8-bit readable/writable up-counter.
RTCNT counts up using the internal clock selected by bits CKS2 to CKS0 in DRAMCR.
When RTCNT matches RTCOR (compare match), the CMF flag in DRAMCR is set to 1 and RTCNT is cleared to H'00.
If the RFSHE bit in DRAMCR is set to 1 at this time, a refresh cycle is started. Also, if the CMIE bit in DRAMCR is set
to 1, a compare match interrupt (CMI) is generated.
RTCNT is initialized to H'00 by a power-on reset and in hardware standby mode. It is not initialized by a manual reset* or
in software standby mode.
Note: * Manual reset is only supported in the H8S/2357 ZTAT.
Bit
Initial value :
R/W
Refresh Timer/Counter (RTCNT)
Bit 3
CMIE
0
1
Bit 2
CKS2
0
1
:
:
R/W
7
0
Description
Interrupt request (CMI) by CMF flag disabled
Interrupt request (CMI) by CMF flag enabled
Bit 1
CKS1
0
1
0
1
R/W
6
0
Bit 0
CKS0
0
1
0
1
0
1
0
1
R/W
5
0
Count uses ø/2
Count uses ø/32
Count uses ø/512
Count uses ø/4096
Description
Count operation disabled
Count uses ø/8
Count uses ø/128
Count uses ø/2048
R/W
4
0
R/W
3
0
R/W
2
0
R/W
Rev.6.00 Oct.28.2004 page 119 of 1016
1
0
R/W
0
0
(Initial value)
(Initial value)
REJ09B0138-0600H