UPD78F1203MC-CAB-AX Renesas Electronics America, UPD78F1203MC-CAB-AX Datasheet - Page 774
UPD78F1203MC-CAB-AX
Manufacturer Part Number
UPD78F1203MC-CAB-AX
Description
MCU 16BIT 78K0R/LX3 30-SSOP
Manufacturer
Renesas Electronics America
Series
78K0R/Ix3r
Datasheet
1.UPD78F1201MC-CAB-AX.pdf
(1067 pages)
Specifications of UPD78F1203MC-CAB-AX
Core Processor
78K/0R
Core Size
16-Bit
Speed
40MHz
Connectivity
3-Wire SIO, I²C, LIN, UART/USART
Peripherals
DMA, LVD, POR, PWM, WDT
Number Of I /o
21
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 6x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Company:
Part Number:
UPD78F1203MC-CAB-AX
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(3) IICA status register (IICS)
Address: FFF51H
Symbol
This register indicates the status of I
IICS is read by a 1-bit or 8-bit memory manipulation instruction only when STT = 1 and during the wait period.
Reset signal generation clears this register to 00H.
Caution Reading the IICS register while the address match wakeup function is enabled (WUP = 1) in
IICS
Note This register is also cleared when a 1-bit memory manipulation instruction is executed for bits
Remark
Condition for clearing (MSTS = 0)
• When a stop condition is detected
• When ALD = 1 (arbitration loss)
• Cleared by LREL = 1 (exit from communications)
• When IICE changes from 1 to 0 (operation stop)
• Reset
Condition for clearing (ALD = 0)
• Automatically cleared after IICS is read
• When IICE changes from 1 to 0 (operation stop)
• Reset
Condition for clearing (EXC = 0)
• When a start condition is detected
• When a stop condition is detected
• Cleared by LREL = 1 (exit from communications)
• When IICE changes from 1 to 0 (operation stop)
• Reset
STOP mode is prohibited. When WUP is changed from 1 to 0 (wakeup operation is stopped),
regardless of the INTIICA interrupt request, the change in status is not reflected until the next
start condition or stop condition is detected. To use the wakeup function, therefore, enable
(SPIE = 1) the interrupt generated by detecting a stop condition and read the IICS register
after the interrupt has been detected.
MSTS
MSTS
EXC
ALD
<7>
0
1
0
1
0
1
other than IICS. Therefore, when using the ALD bit, read the data of this bit before the data of
the other bits.
LREL:
IICE:
After reset: 00H
Slave device status or communication standby status
Master device communication status
This status means either that there was no arbitration or that the arbitration result was a “win”.
This status indicates the arbitration result was a “loss”. MSTS is cleared.
Extension code was not received.
Extension code was received.
Figure 14-7. Format of IICA Status Register (IICS) (1/3)
ALD
<6>
Bit 6 of IICA control register 0 (IICCTL0)
Bit 7 of IICA control register 0 (IICCTL0)
CHAPTER 14 SERIAL INTERFACE IICA
EXC
<5>
2
C.
User’s Manual U19678EJ1V1UD
R
<4>
COI
Note
Detection of extension code reception
Detection of arbitration loss
Master device status
TRC
<3>
Condition for setting (MSTS = 1)
• When a start condition is generated
Condition for setting (ALD = 1)
• When the arbitration result is a “loss”.
Condition for setting (EXC = 1)
• When the higher four bits of the received address
data is either “0000” or “1111” (set at the rising edge
of the eighth clock).
ACKD
<2>
STD
<1>
SPD
<0>
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