HD64F3048VTF8 Renesas Electronics America, HD64F3048VTF8 Datasheet - Page 192

• Manufacturer Part Number: HD64F3048VTF8
• Description: IC H8 MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3048VTF8

• 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): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F3048VX8

Section 7 Refresh Controller
Bit 6—Compare Match Interrupt Enable (CMIE): Enables or disables the CMI interrupt
requested when the CMF flag is set to 1 in RTMCSR. The CMIE bit is always cleared to 0 when
PSRAME = 1 or DRAME = 1.
Bits 5 to 3—Clock Select 2 to 0 (CKS2 to CKS0): These bits select an internal clock source for
input to RTCNT. When used for refresh control, the refresh controller outputs a refresh request at
periodic intervals determined by compare match between RTCNT and RTCOR. When used as an
interval timer, the refresh controller generates CMI interrupts at periodic intervals determined by
compare match. These bits are write-disabled when the PSRAME bit or DRAME bit is set to 1.
Bits 2 to 0—Reserved: Read-only bits, always read as 1.
7.2.3
RTCNT is an 8-bit readable/writable up-counter.
RTCNT is an up-counter that is incremented by an internal clock selected by bits CKS2 to CKS0
in RTMCSR. When RTCNT matches RTCOR (compare match), the CMF flag is set to 1 and
RTCNT is cleared to H'00.
Rev. 7.00 Sep 21, 2005 page 166 of 878
REJ09B0259-0700
Bit 6: CMIE
0
1
Bit 5: CKS2
0
1
Bit
Initial value
Read/Write
Refresh Timer Counter (RTCNT)
R/W
Description
The CMI interrupt requested by CMF is disabled
The CMI interrupt requested by CMF is enabled
Bit 4: CKS1
0
1
0
1
7
0
R/W
6
0
R/W
Bit 3: CKS0
0
1
0
1
0
1
0
1
5
0
R/W
4
0
R/W
Description
Clock input is disabled
3
0
/2 clock source
/8 clock source
/32 clock source
/128 clock source
/512 clock source
/2048 clock source
/4096 clock source
R/W
2
0
R/W
1
0
(Initial value)
(Initial value)
R/W
0
0