参数资料
型号: M52259EVB
厂商: Freescale Semiconductor
文件页数: 36/46页
文件大小: 0K
描述: BOARD EVAL FOR 52259 COLDFIRE V2
产品培训模块: ColdFire MCF5225x
标准包装: 1
系列: ColdFire®
类型: MCU
适用于相关产品: MCF52259
所含物品: 板,线缆,文档,DVD,闪光灯驱动和电源
Electrical Characteristics
?
25 pF / 25 ? for low drive
Table 21. GPIO Timing
NUM
G1
G2
G3
G4
Characteristic
CLKOUT High to GPIO Output Valid
CLKOUT High to GPIO Output Invalid
GPIO Input Valid to CLKOUT High
CLKOUT High to GPIO Input Invalid
Symbol
t CHPOV
t CHPOI
t PVCH
t CHPI
Min
1.5
9
1.5
Max
10
Unit
ns
ns
ns
ns
CLKOUT
GPIO Outputs
G1
G2
G3
G4
GPIO Inputs
Figure 11. GPIO Timing
2.13
Reset Timing
Table 22. Reset and Configuration Override Timing
(V DD = 3.0 to 3.6 V, V SS = 0 V, T A = T L to T H ) 1
NUM
R1
R2
Characteristic
RSTI input valid to CLKOUT High
CLKOUT High to RSTI Input invalid
Symbol
t RVCH
t CHRI
Min
9
1.5
Max
Unit
ns
ns
R3
RSTI input valid time
2
t RIVT
5
t CYC
R4
CLKOUT High to RSTO Valid
t CHROV
10
ns
1
2
All AC timing is shown with respect to 50% V DD levels unless otherwise noted.
During low power STOP, the synchronizers for the RSTI input are bypassed and RSTI is asserted asynchronously to the
system. Thus, RSTI must be held a minimum of 100 ns.
CLKOUT
RSTI
1 R1
R3
R2
Freescale
RSTO
R4
Figure 12. RSTI and Configuration Override Timing
MCF52259 ColdFire Microcontroller, Rev. 5
R4
36
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