MC9328MX21 Datasheet, PDF (20/106 Pages) Motorola, Inc – i.MX family of microprocessors

Specifications
5
RESET_IN
HRESET
RESET_OUT
6
14 cycles @ CLK32
4
CLK32
HCLK
Figure 3. Timing Relationship with RESET_IN
Table 10. Reset Module Timing Parameter Table
Ref
No.
Parameter
1.8V +/- 0.10V
Min
Max
3.0V +/- 0.30V
Min Max
1 Width of input POWER_ON_RESET
2 Width of internal POWER_ON_RESET
(CLK32 at 32 KHz)
3 7K to 32K-cycle stretcher for SDRAM reset
800
–
800
–
300
300
300
300
7
7
7
7
4 14K to 32K-cycle stretcher for internal system reset
HRESERT and output reset at pin RESET_OUT
5 Width of external hard-reset RESET_IN
14
14
14
14
4
–
4
–
6 4K to 32K-cycle qualifier
4
4
4
4
Unit
ms
ms
Cycles of
CLK32
Cycles of
CLK32
Cycles of
CLK32
Cycles of
CLK32
MC9328MX21 Product Preview, Rev. 1.1
20
Freescale Semiconductor