DF2117VT20V Renesas Electronics America, DF2117VT20V Datasheet - Page 706
DF2117VT20V
Manufacturer Part Number
DF2117VT20V
Description
MCU 16BIT FLASH 3V 160K 144-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Datasheet
1.DF2117VT20HV.pdf
(1040 pages)
Specifications of DF2117VT20V
Core Processor
H8S/2600
Core Size
16-Bit
Speed
20MHz
Connectivity
FIFO, I²C, LPC, SCI, SmartCard
Peripherals
POR, PWM, WDT
Number Of I /o
112
Program Memory Size
160KB (160K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 16x10b
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
144-TQFP, 144-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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20.4.3
The Gate A20 signal can mask address A20 to emulate the address mode of the 8086* architecture
CPU used in personal computers. Normally, the Gate A20 signal can be controlled by a firmware.
The fast Gate A20 function that realizes high-seed performance by hardware is enabled by setting
the FGA20E bit to 1 in HICR0.
Note: An Intel microprocessor
(1)
Output of the Gate A20 signal can be controlled by an H'D1 command and data. When the slave
(this LSI) receives data, it normally reads IDR1 in the interrupt handling routine activated by the
IBFI1 interrupt. At this time, firmware copies bit 1 of data following an H'D1 command and
outputs it on pin GA20.
(2)
The internal state of pin GA20 is initialized to 1 since the initial value of the FGA20E bit is 0.
When the FGA20E bit is set to 1, pin P81/GA20 functions as the output of the fast GA20 signal.
The state of pin GA20 can be monitored by reading bit GA20 in HICR2.
The initial output from this pin is 1, which is the initial value. Afterward, the host can manipulate
the output from this pin by sending commands and data. This function is only available via the
IDR1. The LPC decodes commands input from the host. When an H'D1 host command is
detected, bit 1 of the data following the host command is output from pin GA20. This operation
does not depend on firmware or interrupts, and is faster than the regular processing using
interrupts. Table 20.4 shows the conditions that set and clear pin GA20. Figure 20.4 shows the
GA20 output flow. Table 20.5 indicates the GA20 output signal values.
Rev. 2.00 Sep. 28, 2009 Page 664 of 994
REJ09B0452-0200
Regular Gate A20 Operation
Fast Gate A20 Operation
Gate A20
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