TS87C51RD2-VIE Atmel, TS87C51RD2-VIE Datasheet - Page 13
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TS87C51RD2-VIE
Manufacturer Part Number
TS87C51RD2-VIE
Description
IC MCU 8BIT 64K OTP 40MHZ 44VQFP
Manufacturer
Atmel
Series
87Cr
Specifications of TS87C51RD2-VIE
Core Processor
8051
Core Size
8-Bit
Speed
40/30MHz
Connectivity
UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
32
Program Memory Size
64KB (64K x 8)
Program Memory Type
OTP
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
CKCON - Clock Control Register (8Fh)
Reset Value = XXXX XXX0b
Not bit addressable
For further details on the X2 feature, please refer to ANM072 available on the web (http://www.atmel-wm.com)
Rev. C - 06 March, 2001
Bit Number
7
6
5
4
3
2
1
0
7
-
Mnemonic
Bit
X2
-
-
-
-
-
-
-
6
-
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
CPU and peripheral clock bit
The value read from this bit is indeterminate. Do not set this bit.
The value read from this bit is indeterminate. Do not set this bit.
The value read from this bit is indeterminate. Do not set this bit.
The value read from this bit is indeterminate. Do not set this bit.
The value read from this bit is indeterminate. Do not set this bit.
The value read from this bit is indeterminate. Do not set this bit.
The value read from this bit is indeterminate. Do not set this bit.
Clear to select 12 clock periods per machine cycle (STD mode, F
Set to select 6 clock periods per machine cycle (X2 mode, F
5
-
Table 3. CKCON Register
4
-
3
-
Description
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
OSC
2
-
=F
OSC
XTAL
TS80C51RA2/RD2
=F
XTAL
).
/
2).
1
-
X2
0
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