发明名称 |
Clock signal generation circuit and semiconductor device |
摘要 |
The semiconductor device is provided with a clock signal generation circuit that includes a reference clock signal generation circuit which generates a first reference clock signal, a first counter circuit which counts the number of rising edges of the first reference clock signal by using the first reference clock signal and a synchronizing signal, a second counter circuit which counts the number of rising edges of the first reference clock signal by using an enumerated value of the first counter circuit, a first divider circuit which divides a frequency of the first reference clock signal by using the enumerated value of the first counter circuit and generates a second reference clock signal, and a second divider circuit which divides a frequency of the second reference clock signal and generates a clock signal. |
申请公布号 |
EP1956480(A1) |
申请公布日期 |
2008.08.13 |
申请号 |
EP20080001426 |
申请日期 |
2008.01.25 |
申请人 |
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
KUROKAWA, YOSHIYUKI;IKEDA, TAKAYUKI;ENDO, MASAMI;DEMBO, HIROKI;KAWAE, DAISUKE;INOUE, TAKAYUKI;KOZUMA, MUNEHIRO |
分类号 |
G06F7/68;G06F1/025;G06F1/04;G06F1/08;H03K23/68;H04L7/033;H04L7/08 |
主分类号 |
G06F7/68 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|