VRS51C1000-40-QG Ramtron, VRS51C1000-40-QG Datasheet - Page 34

• Manufacturer Part Number: VRS51C1000-40-QG
• Description: Microcontrollers (MCU) 64K+1K 40MHz 5V
• Manufacturer: Ramtron

Specifications of VRS51C1000-40-QG

• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 64 KB
• Data Ram Size: 1 KB
• Interface Type: UART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 36
• Number Of Timers: 3
• Operating Supply Voltage: 4.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFP-44
• Minimum Operating Temperature: - 40 C
• Data Rom Size: 128 B
• Height: 2 mm
• Length: 10 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Width: 10 mm
• Lead Free Status / Rohs Status: Details

T
T
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ABLE
ABLE
PWMD3.0
Bit
7
6
5
4
3
2
1
0
Bit
7
VRS51C1000
PWMD3.4
PWMD4.4
PWMD4.0
44: PWM D
45: PWM D
Mnemonic
PWMD3.4
PWMD3.3
PWMD3.2
PWMD3.1
PWMD3.0
NP3.2
NP3.1
NP3.0
Mnemonic
PWMD4.4
7
3
7
3
ATA
ATA
R
R
EGISTER
EGISTER
PWMD3.3
PWMD4.3
NP3.2
NP4.2
Description
Contents of PWM Data Register 3 Bit 4
Contents of PWM Data Register 3 Bit 3
Contents of PWM Data Register 3 Bit 2
Contents of PWM Data Register 3 Bit 1
Contents of PWM Data Register 3 Bit 0
Inserts Narrow Pulses in a 8-PWM-Cycle
Frame
Description
Contents of PWM Data Register 4 Bit 4
6
2
6
2
3 (PWMD1) – SFR A7
4 (PWMD1) – SFR AC
PWMD3.2
PWMD4.2
NP3.1
NP4.1
5
1
5
1
H
H
PWMD3.1
PWMD4.1
NP3.0
NP4.0
4
0
4
0
The table below shows the number of PWM cycles
inserted in an 8-cycle frame when we vary the NP
number.
6
5
4
3
2
1
0
N = NP[4:0][2:0]
PWMD4.3
PWMD4.2
PWMD4.1
PWMD4.0
NP4.2
NP4.1
NP4.0
XX1
X1X
1XX
Contents of PWM Data Register 4 Bit 3
Contents of PWM Data Register 4 Bit 2
Contents of PWM Data Register 4 Bit 1
Contents of PWM Data Register 4 Bit 0
Inserts Narrow Pulses in a 8-PWM-Cycle
Frame
Number of PWM cycles inserted
in an 8-cycle frame
page 34 of 48
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