UPD70F3201YGC-YEU-A Renesas Electronics America, UPD70F3201YGC-YEU-A Datasheet - Page 397
UPD70F3201YGC-YEU-A
Manufacturer Part Number
UPD70F3201YGC-YEU-A
Description
MCU 32BIT I2C 100TQFP
Manufacturer
Renesas Electronics America
Series
V850ES/Sx2r
Datasheet
1.UPD70F3201YGC-YEU-A.pdf
(555 pages)
Specifications of UPD70F3201YGC-YEU-A
Core Processor
RISC
Core Size
32-Bit
Speed
20MHz
Connectivity
CSI, EBI/EMI, I²C, UART/USART
Peripherals
DMA, PWM, WDT
Number Of I /o
68
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
2.2 V ~ 2.7 V
Data Converters
A/D 12x10b; D/A 2x8b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
UPD70F3201YGC-YEU-A
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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15.13 Communication Reservation
to enable transmission of a start condition when the bus is released. There are two modes under which the bus is not
used.
To start master device communications when not currently using a bus, a communication reservation can be made
• When arbitration results in neither master nor slave operation
• When an extension code is received and slave operation is disabled (ACK is not returned and the bus was
If bit 1 (STT) of IICC is set while the bus is not being used, a start condition is automatically generated and the wait
status is set after the bus is released (after a stop condition is detected).
When the bus release is detected (when a stop condition is detected), writing to the IIC shift register (IIC) causes
the master’s address transfer to start. At this point, bit 4 (SPIE) of IICC should be set.
When the STT bit has been set, the operation mode (as start condition or as communication reservation) is
determined according to the bus status.
If the bus has been released ...................................................a start condition is generated
If the bus has not been released (standby mode) ...................communication reservation
To detect which operation mode has been determined for the STT bit, set the STT bit, wait for the wait period, then
check the MSTS (bit 7 of IIC status register (IICS)).
Wait periods, which should be set via software, are listed in Table 15-6. These wait periods can be set via the
settings for bits 3, 1, and 0 (SMC, CL1, and CL0) in the IIC clock selection register (IICCL).
released when bit 6 (LREL) of the IIC control register (IICC) was set to “1”).
SMC
0
0
0
0
1
1
1
1
CL1
0
0
1
1
0
0
1
1
Table 15-6. Wait Periods
User’s Manual U15905EJ2V1UD
CHAPTER 15 I
CL0
0
1
0
1
0
1
0
1
2
C BUS
26 clocks
46 clocks
92 clocks
37 clocks
16 clocks
32 clocks
13 clocks
Wait Period
395
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