HD64F3048VTF8 Renesas Electronics America, HD64F3048VTF8 Datasheet - Page 212
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
- Current page: 212 of 907
- Download datasheet (6Mb)
Section 7 Refresh Controller
Refresh Cycle Priority Order: When there are simultaneous bus requests, the priority order is:
For details see section 6.3.7, Bus Arbiter Operation.
Wait State Insertion: When bit AST3 is set to 1 in ASTCR, the wait state controller (WSC) can
insert wait states into bus cycles and refresh cycles. For details see section 6.3.5, Wait Modes.
Self-Refresh Mode: Some pseudo-static RAM devices have a self-refresh function. After the
SRFMD bit is set to 1 in RFSHCR, when a transition to software standby mode occurs, the
H8/3048 Group’ CS
RAM self-refresh function can be used. On exit from software standby mode, the RFSH output
goes high.
Table 7.8 shows the pin states in software standby mode. Figure 7.16 shows the signal output
timing.
Table 7.8
Signal
CS
RD
HWR
LWR
RFSH
Rev. 7.00 Sep 21, 2005 page 186 of 878
REJ09B0259-0700
3
(High)
Pin States in Software Standby Mode (2) (PSRAME = 1, DRAME = 0)
External bus master > refresh controller > DMA controller > CPU
3
output goes high and its RFSH output goes low so that the pseudo-static
SRFMD = 0
High
High-impedance
High-impedance
High-impedance
High
Software Standby Mode
SRFMD = 1 (Self-Refresh Mode)
High
High-impedance
High-impedance
High-impedance
Low
(Low)
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