DF2218BR24V Renesas Electronics America, DF2218BR24V Datasheet - Page 209
![IC H8S/2218 MCU FLASH 112-LFBGA](/photos/12/42/124228/df2218br24v_sml.jpg)
DF2218BR24V
Manufacturer Part Number
DF2218BR24V
Description
IC H8S/2218 MCU FLASH 112-LFBGA
Manufacturer
Renesas Electronics America
Series
H8® H8S/2200r
Specifications of DF2218BR24V
Core Processor
H8S/2000
Core Size
16-Bit
Speed
24MHz
Connectivity
SCI, SmartCard, USB
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
69
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
12K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 3.6 V
Data Converters
A/D 6x10b
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
112-LFBGA
For Use With
HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)3DK2218-SS - KIT DEV H8S/2218 WINDOWS SIDESHW3DK2218 - DEV EVAL KIT H8S/2218
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF2218BR24V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 209 of 758
- Download datasheet (5Mb)
6.9
The H8S/2218 Group can release the external bus in response to a bus request from an external
device. In the external bus released state, the internal bus master continues to operate as long as
there is no external access.
In external extended mode, the bus can be released to an external device by setting the BRLE bit in
BCRL to 1. Driving the BREQ pin low issues an external bus request to this LSI. When the BREQ
pin is sampled, at the prescribed timing the BACK pin is driven low, and the address bus, data bus,
and bus control signals are placed in the high-impedance state, establishing the external bus-
released state.
In the external bus released state, an internal bus master can perform accesses using the internal
bus. When an internal bus master wants to make an external access, it temporarily defers activation
of the bus cycle, and waits for the bus request from the external bus master to be dropped.
When the BREQ pin is driven high, the BACK pin is driven high at the prescribed timing and the
external bus released state is terminated.
In the event of simultaneous external bus release request and external access request generation,
the order of priority is as follows:
Table 6.5 shows pin states in the external bus released state.
In the H8S/2212 Group, the BRLE bit in BCRL should not be set to 1.
Table 6.5
Pins
A23 to A0
D15 to D0
CSn
AS
RD
HWR
LWR
(High) External bus release > Internal bus master external access (Low)
Bus Release
Pin States in Bus Released State
Pin State
High impedance
High impedance
High impedance
High impedance
High impedance
High impedance
High impedance
Rev.7.00 Dec. 24, 2008 Page 153 of 698
REJ09B0074-0700
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