HD6473937W Renesas Electronics America, HD6473937W Datasheet - Page 348
HD6473937W
Manufacturer Part Number
HD6473937W
Description
MCU FLASH OTP 60K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300L SLPr
Datasheet
1.HD6473937RXV.pdf
(523 pages)
Specifications of HD6473937W
Core Processor
H8/300L
Core Size
8-Bit
Speed
10MHz
Connectivity
SCI
Peripherals
POR, WDT
Number Of I /o
59
Program Memory Size
60KB (60K x 8)
Program Memory Type
OTP
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Part Number:
HD6473937W
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The host must transition the SS pin from high to low to begin each 32-bit packet. The FLEX
decoder must see a negative transition on the SS pin in order for the host to initiate each packet
communication.
12.2.2
Refer to figure 12-5.When the FLEX decoder has a packet for the host to read, the following
occurs:
1. The FLEX decoder drives the READY pin low.
2. If the FLEX decoder is not already selected, the host selects the FLEX decoder by driving the
3. The host receives (and sends) a 32-bit packet.
4. The host de-selects the FLEX decoder by driving the SS pin high (optional).
When the host is reading a packet from the FLEX decoder, it must send a valid packet to the
FLEX decoder. If the host has no data to send, it is suggested that the host send a Checksum
Packet with all of the data bits set to 0 in order to avoid disabling the FLEX decoder. See 12.3.1,
Checksum Packet for more details on enabling and disabling the FLEX decoder.
The following figure illustrates that it is not necessary to de-select the FLEX decoder between
packets when the packets are initiated by the FLEX decoder.
334
READY
MOSI
MISO
SCK
SS pin low.
Figure 12-5 Typical Multiple Packet Communications Initiated by the FLEX decoder
SS
Packet Communication Initiated by the FLEX decoder
1
2
3
D31
D31
D1 D0
D1 D0
4
High impedance state
D31
D31
D1 D0
D1 D0
D31
D31
D1 D0
D1 D0
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