R5F21334CNFP#U0 Renesas Electronics America, R5F21334CNFP#U0 Datasheet - Page 155
R5F21334CNFP#U0
Manufacturer Part Number
R5F21334CNFP#U0
Description
MCU 1KB FLASH 16K ROM 32-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/3x/33Cr
Datasheet
1.R5F21331CNFPU0.pdf
(622 pages)
Specifications of R5F21334CNFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, PWM, Voltage Detect, WDT
Number Of I /o
27
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 12x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
32-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F21334CNFP#U0R5F21334CNFP#V2
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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R8C/33C Group
REJ09B0570-0100 Rev.1.00 Dec. 14, 2009
Page 125 of 589
9.8
Table 9.5
Oscillation stop detection clock and
frequency bandwidth
Enabled condition for oscillation stop
detection function
Operation at oscillation stop detection
The oscillation stop detection function detects the stop of the XIN clock oscillating circuit.
The oscillation stop detection function can be enabled and disabled by the OCD0 bit in the OCD register.
Table 9.5 lists the Specifications of Oscillation Stop Detection Function.
When the XIN clock is the CPU clock source and bits OCD1 to OCD0 are set to 11b, the MCU is placed in the
following state if the XIN clock stops.
•
•
•
•
OCD2 bit in OCD register = 1 (on-chip oscillator clock selected)
OCD3 bit in OCD register = 1 (XIN clock stops)
CM14 bit in CM1 register = 0 (low-speed on-chip oscillator oscillates)
Oscillation stop detection interrupt request is generated
Oscillation Stop Detection Function
Specifications of Oscillation Stop Detection Function
Item
f(XIN) ≥ 2 MHz
Bits OCD1 to OCD0 set to 11b
Oscillation stop detection interrupt generated
Specification
9. Clock Generation Circuit
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