HD64F3048VTF8 Renesas Electronics America, HD64F3048VTF8 Datasheet - Page 184
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: 184 of 907
- Download datasheet (6Mb)
Section 6 Bus Controller
6.4.3
After driving the BREQ pin low, hold it low until BACK goes low. If BREQ returns to the high
level before BACK goes low, the bus arbiter may operate incorrectly.
To terminate the external-bus-released state, hold the BREQ signal high for at least three states. If
BREQ is high for too short an interval, the bus arbiter may operate incorrectly.
6.4.4
If contention occurs between a transition to software standby mode and a bus request from an
external bus master, the bus may be released for one state just before the transition to software
standby mode (see figure 6.23). When using software standby mode, clear the BRLE bit to 0 in
BRCR before executing the SLEEP instruction.
Rev. 7.00 Sep 21, 2005 page 158 of 878
REJ09B0259-0700
BREQ
BACK
Address bus
Strobe
Figure 6.23 Contention between Bus-Released State and Software Standby Mode
BREQ Input Timing
BREQ
Transition To Software Standby Mode
BREQ
BREQ
Bus-released state
Software standby mode
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