HD6413007F20 Renesas Electronics America, HD6413007F20 Datasheet - Page 200

• Manufacturer Part Number: HD6413007F20
• Description: IC H8 MCU ROMLESS 5V 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD6413007F20

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 35
• Program Memory Type: ROMless
• 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-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -

6. Bus Controller
6.6
6.6.1
When DRAM is not connected to the H8/3006 and H8/3007 chip, the refresh timer can be used as
an interval timer by clearing bits DRAS2 to DRAS0 in DRCRA to 0. After setting RTCOR,
selection a clock source with bits CKS2 to CKS0 in RTMCSR, and set the CMIE bit to 1.
Timing of Setting of Compare Match Flag and Clearing by Compare Match: The CMF flag
in RTMCSR is set to 1 by a compare match output when the RTCOR and RTCNT values match.
The compare match signal is generated in the last state in which the values match (when RTCNT
is updated from the matching value to a new value). Accordingly, when RTCNT and RTCOR
match, the compare match signal is not generated until the next counter clock pulse. Figure 6.36
shows the timing.
Rev.5.00 Sep. 12, 2007 Page 170 of 764
REJ09B0396-0500
Interval Timer
Operation
Address bus
RAS
CAS
φ
Oscillation stabilization
time on exit from software
standby mode
Figure 6.35 Self-Refresh Clearing
CPU internal cycle
bus can be released)
(period in which external
CPU cycle
@SP