HD64F3029XBL25V Renesas Electronics America, HD64F3029XBL25V Datasheet - Page 202

• Manufacturer Part Number: HD64F3029XBL25V
• Description: MCU 5V 512K,PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3029XBL25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 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: Lead free / RoHS Compliant
• Eeprom Size: -

To use the self-refresh function, set the SRFMD bit to 1 in DRCRA. When a SLEEP instruction is
subsequently executed in order to enter software standby mode, the CAS and RAS signals are
output and the DRAM enters self-refresh mode, as shown in figure 6.30.
When the chip exits software standby mode, CAS and RAS outputs go high.
The following conditions must be observed when the self-refresh function is used:
The self-refresh function will not work properly unless the above conditions are observed.
Refresh Signal (RFSH
output by setting the RFSHE bit to 1 in DRCRA. RFSH output timing is shown in figures 6.28,
6.29, and 6.30.
When burst access is selected, RAS up mode must be selected before executing a SLEEP
instruction in order to enter software standby mode. Therefore, if RAS down mode has been
selected, the RDM bit in DRCRA must be cleared to 0 and RAS up mode selected before
executing the SLEEP instruction. Select RAS down mode again after exiting software standby
mode.
The instruction immediately following a SLEEP instruction must not be located in an area
designated as DRAM space.
Address bus
PB
PB
CS
RFSH
4
5
RD(WE)
(UCAS)
(LCAS)
n
(RAS)
RFSH): A refresh signal (RFSH) that transmits a refresh cycle off-chip can be
RFSH
RFSH
Figure 6.30 Self-Refresh Timing (CSEL = 0)
Software standby
High-impedance
mode
Oscillation stabilization
Rev. 2.0, 06/04, page 173 of 980
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