HD64F3048BF25 Renesas Electronics America, HD64F3048BF25 Datasheet - Page 194

• Manufacturer Part Number: HD64F3048BF25
• Description: IC H8 MCU FLASH 128K 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3048BF25

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K 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: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 7 Refresh Controller
7.2.2
RTMCSR is an 8-bit readable/writable register that selects the clock source for RTCNT. It also
enables or disables interrupt requests when the refresh controller is used as an interval timer.
Bits 7 and 6 are initialized by a reset and in standby mode. Bits 5 to 3 are initialized by a reset and
in hardware standby mode, but retain their previous values on transition to software standby mode.
Bit 7—Compare Match Flag (CMF): This status flag indicates that the RTCNT and RTCOR
values have matched.
Bit 7: CMF
0
1
Rev. 3.00 Sep 27, 2006 page 166 of 872
REJ09B0325-0300
Bit
Initial value
Read/Write
Note: * Only 0 can be written, to clear the flag.
Refresh Timer Control/Status Register (RTMCSR)
Compare match flag
Status flag indicating that RTCNT has matched RTCOR
R/(W)
CMF
Description
[Clearing condition]
Cleared by reading CMF when CMF = 1, then writing 0 in CMF
[Setting condition]
When RTCNT = RTCOR
7
0
*
Compare match interrupt enable
Enables or disables the CMI interrupt requested by CMF
CMIE
R/W
6
0
CKS2
R/W
5
0
Clock select 2 to 0
These bits select an
internal clock source
for input to RTCNT
CKS1
R/W
4
0
CKS0
R/W
3
0
2
1
Reserved bits
1
1
0
1