HD64F3048VTF8 Renesas Electronics America, HD64F3048VTF8 Datasheet - Page 221
HD64F3048VTF8
Manufacturer Part Number
HD64F3048VTF8
Description
IC H8 MCU FLASH 128K 100-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Datasheet
1.HD64F3048F16.pdf
(907 pages)
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
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7.4
Compare match interrupts (CMI) can be generated when the refresh controller is used as an
interval timer. Compare match interrupt requests are masked/unmasked with the CMIE bit of
RTMCSR.
7.5
When using the DRAM or pseudo-static RAM refresh function, note the following points:
Note: * When the DRAM enable bit (DRAME) or PSRAM enable bit (PSRAME) in the refresh
Address bus
P8
P8
With the refresh controller, if directly connected DRAM or PSRAM is disconnected*, the
P8
simultaneously.
Refresh cycles are not executed while the bus is released, during software standby mode, and
when a bus cycle is greatly prolonged by insertion of wait states. When these conditions occur,
other means of refreshing are required.
If refresh requests occur while the bus is released, the first request is held and one refresh cycle
is executed after the bus-released state ends. Figure 7.24 shows the bus cycles in this case.
0
1
0
/RFSH/IRQ
/CS
/RFSH/IRQ
control register (RFSHCR) is cleared to 0 after being set to 1.
Usage Notes
Interrupt Source
3
/IRQ
Figure 7.23 Operation when DRAM/PSRAM Connection is Switched
1
0
0
pin and the P8
1
/CS
3
/IRQ
1
pin may both become low-level outputs
Area 3 start address
Rev. 7.00 Sep 21, 2005 page 195 of 878
Section 7 Refresh Controller
REJ09B0259-0700
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